The Shortest Price List in Ikebukuro
There's a stretch of Nishi-Ikebukuro 1-chome, three minutes off the north end of the west exit, where the soaplands stand close enough together that you can read four signs without turning your head. It is not a glamorous block. It's a working block — vending machines, a coin lot, men walking at the specific pace of people who have already decided.
I came for 個室サウナ夢幻 — Koshitsu Sauna Mugen, and I came because of what its listing doesn't have. I do this for a living now: I open a Cityheaven page, scroll to the price system tab, and start counting rows. Most Tokyo shops give me a wall — eight courses, twelve options, a nomination ladder, a membership fee, an extension rate, three coupons, a seasonal event, a per-day discount schedule. Mugen's system page, in its entirety, is this:
トータル料金 60分 19,000円 80分 23,000円 ネット指名・本指名料 1,000円
That's it. Two courses, one fee, three numbers. The coupon tab reads 現在クーポンを提供しておりません — we are not currently offering coupons. The event tab reads 現在イベントを開催しておりません — no events currently. Both tabs exist. Both are empty. Sixteen hours a day, three hundred and sixty-five days a year, at a shop with seventy women on the books.
I have been staring at price boards long enough to find this genuinely startling. A shop this size, in a district this competitive, publishing a price list that fits on a business card and — apparently — declining to discount it at all.
That last part turned out to be wrong, and finding out how wrong took a screenshot rather than a page of text. Hold that thought; we'll get to the ¥8,000 hiding in a JPEG.
So I did what I always do, which is go and find out whether the simplicity is honesty or camouflage.
Two Courses, and the Second One Is the Only One Worth Buying
Run the two lines through the only column that matters.
| Course | Price | Per minute |
|---|---|---|
| 60 min | ¥19,000 | ¥316.67 |
| 80 min | ¥23,000 | ¥287.50 |
Now look at what the twenty minutes between them actually cost:
¥4,000 for 20 minutes = ¥200.00 per minute.
The first sixty minutes at Mugen are billed at ¥316.67 a minute. The next twenty are billed at ¥200.00 — thirty-seven percent cheaper. That is not a gentle volume discount. That is the shop taking the position that once you are in the building, in the room, and out of the queue, the marginal minute is worth about two-thirds of what the first one was.
Put it the other way round, which is how I'd want it explained to me at the front desk. If Mugen simply charged its 60-minute rate all the way up, ¥23,000 would buy you 72.6 minutes. The 80-minute course gives you eighty. You are getting roughly seven and a half minutes free — not as a coupon, not as an event, not as a "say you saw it on Heaven," but permanently baked into a two-line price board with no promotions attached to it at all.
Add the nomination fee and the ranking doesn't move:
| Course price | +¥1,000 nomination | Per minute | |
|---|---|---|---|
| 60 min | ¥19,000 | ¥20,000 | ¥333.33 |
| 80 min | ¥23,000 | ¥24,000 | ¥300.00 |
That ¥1,000, incidentally, is worth its own sentence. It covers both ネット指名 and 本指名 — booking a specific woman online or requesting her at the desk, same price either way — and it is 5.3% of the base course. Three minutes' walk away at Polaris, another shop in the same group, the equivalent line reads ※本指名・ネット指名は2,000円頂きます. Double. Mugen charges the lowest nomination fee I found anywhere in the Ikebukuro soap market, and it does not mention this on its own front page.
Verdict on the menu: there is no scenario in which the 60-minute course is the right purchase unless ¥19,000 is a hard ceiling. Every yen you add past it buys time at a rate the first hour never offers.
The Same ¥19,000 Note Buys Different Amounts of Time on the Same Street
Mugen belongs to the 角海老グループ — Kadoebi — and this is where the two-line price board stops looking like minimalism and starts looking like positioning.
Kadoebi runs five of the ten soaplands in Ikebukuro. Half the district. Here is the group's local ladder, as published on Cityheaven's own shop list on 26 August 2026:
| Kadoebi shop | Area | Entry course | Per minute |
|---|---|---|---|
| Polaris | Ikebukuro east | 50 min / ¥18,000 | ¥360.00 |
| 個室サウナ千姫 Senhime | north & west | 50 min / ¥19,000 | ¥380.00 |
| 個室サウナ夢幻 Mugen | north & west | 60 min / ¥19,000 | ¥316.67 |
| ソープランド池袋角海老 | Ikebukuro east | 60 min / ¥19,000 | ¥316.67 |
| Grace東京 | north & west | 70 min / ¥25,000 | ¥357.14 |
Read the middle two rows again. Senhime and Mugen are both Kadoebi shops, both branded 個室サウナ, both listed at 池袋北口徒歩3分 — and the identical ¥19,000 buys fifty minutes at one and sixty at the other. Same group, same three-minute walk from the same station exit, same banknote, twenty percent more time.
Both shops also make a superlative claim about their rooms, and the claims are cleverly non-overlapping. Mugen's says 池袋地区最多の部屋数 — the most rooms in the Ikebukuro area. Senhime's says 池袋最大級のお部屋の広さを誇ります — among the largest room sizes in Ikebukuro. One has the most rooms; the other has the biggest ones. Neither publishes a number. Meanwhile 泡の伝道師, a standard-grade shop a few doors along, is described in Cityheaven's own editorial as having 部屋数はなんと2部屋 — two rooms, total. The smallest soapland in Ikebukuro will tell you exactly how many rooms it has. The one claiming the most won't.
And on per-minute rate, Mugen and its east-side stablemate are the cheapest of the five. Grace東京 sells the longest entry course in the district at seventy minutes but charges ¥25,000 for it. Senhime charges the same note as Mugen for ten fewer minutes. Within its own group, in its own district, Mugen's 80-minute course at ¥287.50 a minute is the cheapest minute Kadoebi sells in Ikebukuro.
Ten Shops, One Table, and a Shop That's Expensive to Enter and Cheap to Stay In
Here is the whole Ikebukuro soap market as Cityheaven listed it on the day I looked. Entry course only — that's the one figure the district publishes uniformly, so it's the one comparison I can make honestly across all ten.
| Shop | Grade | Entry course | Per minute | Reviews |
|---|---|---|---|---|
| ソープランド若葉 | 激安 | 50 / ¥12,500 | ¥250.00 | 2,606 |
| 若葉池袋北口駅前店 | 激安 | 50 / ¥14,000 | ¥280.00 | 3 |
| みんなのお店 | 激安 | 40 / ¥12,000 | ¥300.00 | 2,453 |
| 個室サウナ夢幻 | 激安 | 60 / ¥19,000 | ¥316.67 | 537 |
| ソープランド池袋角海老 | 激安 | 60 / ¥19,000 | ¥316.67 | 857 |
| Grace東京 | 激安 | 70 / ¥25,000 | ¥357.14 | 1,131 |
| Polaris | 激安 | 50 / ¥18,000 | ¥360.00 | 1,000 |
| 池袋蕩け湯 | スタンダード | 40 / ¥15,000 | ¥375.00 | 3,295 |
| 個室サウナ千姫 | 激安 | 50 / ¥19,000 | ¥380.00 | 628 |
| 泡の伝道師 | スタンダード | 40 / ¥19,000 | ¥475.00 | 1,652 |
Two things fall out of that table and they point in opposite directions.
First: Mugen's ¥19,000 is a joint second-highest ticket in Ikebukuro. Only Grace東京's ¥25,000 is a bigger single number, and three shops tie with Mugen at ¥19,000. If you are standing on the street with a budget and no calculator, Mugen looks like one of the more expensive doors on the block.
Second: on rate, it's fourth-cheapest of ten. And the reason is structural rather than promotional — Mugen simply refuses to sell a short course. Six of the ten shops here will take your money for forty or fifty minutes. Mugen's floor is sixty, second only to Grace東京's seventy. The high ticket is not a premium. It's a minimum.
Now drop the 80-minute course into the same ranking. At ¥287.50 a minute it lands third-cheapest in Ikebukuro, beaten only by the two Wakaba shops. A shop that presents as one of the pricier options on the street is, at its second rung, the third-best rate in the entire district.
Mugen is expensive to walk into and cheap to stay in. That's the whole shop in one line, and its own price board does not say it anywhere.
Five Shops With Coupons, Five Without, and the Line Between Them Is Ownership
This is the finding I did not expect, and it's clean enough that I checked it twice.
Of Ikebukuro's ten soaplands, exactly five display a live coupon on their Cityheaven listing card:
- 池袋蕩け湯 — 20% off, 100 min ¥33,000 (◆8,000円OFF◆)
- ソープランド若葉 — 30% off, 50 min ¥14,000, 7–9am only
- 泡の伝道師 — 100 min ¥40,000, net-reservation exclusive
- みんなのお店 — 40% off, 40 min ¥12,000, ★池袋エリア最安値★
- 若葉池袋北口駅前店 — 50 min ¥15,000, 9–11am only
And exactly five display none. Those five are Mugen, Senhime, Polaris, Ikebukuro Kadoebi and Grace東京.
The five with no coupons are precisely the five Kadoebi shops. Every independent operator in Ikebukuro is running a coupon this afternoon; not one shop in the district's largest group is. That isn't a coincidence of timing — it's a house position, visible across five separate listings on the same day.
But "doesn't use Cityheaven's coupon system" and "doesn't discount" are two different claims, and I spent most of a day conflating them.
The ¥8,000 That Only Exists as a JPEG
I only caught this because I take a screenshot of every shop's front page, and the screenshot came back showing something the page's text never did. Mugen's header carousel — the big rotating image above the fold, three slides deep — leads with this:
ご新規様限定 特別スタンプカード配布中 MAX ¥8,000 off 3/2（月）START 詳細は店舗スタッフまでお尋ねください。
New customers only. Special stamp card now being issued. Up to ¥8,000 off. Starts Monday 2 March. Ask a member of staff for details.
So there is a discount. It is the largest single discount available at any of the five Kadoebi shops in Ikebukuro. And here is where it lives, in full:
- Not on the price system page, which is still two lines and a nomination fee.
- Not on the coupon tab, which still says 現在クーポンを提供しておりません.
- Not on the event tab, which still says 現在イベントを開催しておりません.
- Not on the shop-info block, the group site's shop-detail table, or anywhere else in machine-readable text.
It exists as pixels in a rotating banner, and the only stated mechanism for learning its terms is 詳細は店舗スタッフまでお尋ねください — ask a staff member. What does MAX ¥8,000 mean? Across how many visits? How many stamps? Applied to which course? Expiring when? None of that is published. The banner tells you a ceiling and a door, and nothing in between.
Two details sharpen it. The first is the date: 3/2（月） — Monday 2 March, which checks out as a Monday in 2026. I am writing this on 26 August. That's a "campaign" in its sixth month, still fronting the page, still undated at the far end.
The second is the scope. This banner is Mugen's. I pulled the lead banners of its two nearest sister shops — Senhime three minutes away and Ikebukuro Kadoebi across the tracks — and both are pure brand artwork with no offer on them at all. Whatever the stamp card is, it isn't a group-wide campaign being mirrored across five listings. It's this shop's.
And it explains the one genuinely discordant note in the reviews. Buried in a 4.6-star write-up from a repeat customer, in the section for suggestions:
これは希望ですが他店との競争も有ると思うので、例えば他とは違う魅力的な（夢幻に行きたい…）キャンペーンを季節毎に開催して欲しいです。
This is just a wish, but since there's competition with other shops, I'd like to see them run a seasonal campaign — something distinctive that makes you think "I want to go to Mugen." A man on his third-or-later visit, asking for a campaign at a shop that is running one — because the campaign it's running is ご新規様限定, new customers only, and he is disqualified by loyalty.
Seventy Women, and Seventy Blank Age Fields
The roster page lists 70 women. I pulled every profile line and ran the numbers.
| Cup | Count | Cup | Count | |
|---|---|---|---|---|
| A | 1 | F | 11 | |
| B | 2 | G | 8 | |
| C | 10 | H | 7 | |
| D | 10 | I | 2 | |
| E | 16 | J | 3 |
Thirty-one of seventy — 44% — are F-cup or larger, and E is the single most common entry at sixteen. Heights run 142cm to 169cm with a median of 158; bust measurements run 80 to 120 with a median of 88. It's a broad roster rather than a specialist one, which is what you'd expect from a shop whose stated concept is 様々なタイプ — various types — rather than a genre.
And then there's the column that isn't there. Cityheaven prints an age on every profile line it can. Mugen's roster shows ?歳. Seventy times.
Not one age published, anywhere, for anyone. It carries into the review section too, where Cityheaven's template prints the woman's age in brackets after her name and comes out as りこ[歳] — an empty bracket, because there's no number to put in it. Every review on the shop's 537-strong board has that little hole in it.
There's nothing improper here — the shop states clearly that 当店には18歳未満のコンパニオンは在籍しておりません, and the age field is optional across the platform. But it is a deliberate choice, applied with total consistency across seventy profiles, and it means the single most common filter customers use to shortlist a shop is unavailable at this one. You choose here on photographs, measurements, the one-line catchphrase, and the reviews. Nothing else.
Which, given that 写真 is one of the two lowest-scoring categories in the reviews I sampled, is worth knowing before you start browsing.
The Two-Shift Factory
I pulled today's schedule — Wednesday 26 August — and this is where the shop's actual operating logic shows up.
27 women on shift. 151.5 woman-hours. An average shift of 5.6 hours. Twenty-seven of a seventy-woman roster is 39% working on a Wednesday, which is a strong midweek showing by any standard.
But look at when they start:
| Start | Women | Start | Women | |
|---|---|---|---|---|
| 8:00 | 1 | 15:00 | 5 | |
| 9:00 | 1 | 16:00 | 3 | |
| 9:30 | 1 | 17:00 | 3 | |
| 10:00 | 2 | 18:00 | 1 | |
| 10:30 | 2 | 19:30 | 2 | |
| 11:00 | 4 | |||
| 12:00 | 2 |
Thirteen women start between 8:00 and 12:00. Fourteen start between 15:00 and 19:30. Not a single shift begins between 12:00 and 15:00. That's not a schedule, it's a shift change — a morning crew and an evening crew, with a hard seam at three in the afternoon.
You can see the seam in the coverage:
| Hour | Women on shift | Hour | Women on shift | |
|---|---|---|---|---|
| 8:00 | 1 | 16:00 | 11 | |
| 10:00 | 7 | 17:00 | 14 | |
| 12:00 | 13 | 19:00 | 14 | |
| 14:00 | 11 | 20:00 | 14 | |
| 15:00 | 9 | 22:00 | 11 |
Noon: thirteen women. Three o'clock: nine — the thinnest hour of the working day between 11:00 and 23:00, because the morning crew has clocked out and the evening crew is only just arriving. Then it climbs to a fourteen-woman plateau that holds from five in the afternoon to eight in the evening.
If choice matters to you, 17:00–20:00 is the window. If it doesn't, the 15:00 trough is where the "most rooms in Ikebukuro" claim is least likely to be tested.
Now the detail that actually changes plans. The shop advertises 8:00～24:00, 年中無休. Sixteen hours. Today's board: one woman starts at 8:00, and the last shift ends at 23:00. Eight women finish at exactly 23:00 and nobody works past it.
So the advertised sixteen-hour day is really a fifteen-hour staffed day with a single woman covering the first hour of it — and because the minimum course is sixty minutes, the last workable 60-minute start is around 22:00 and the last 80-minute start is around 21:40. Turn up at 23:15 at a shop that says it's open until midnight and the board says there's nobody left to see.
What Isn't Printed, and What's Printed Somewhere Else
I went looking on the Cityheaven listing for the numbers a customer needs and found these missing:
- 延長料金 (extension) — not published. Anywhere. Which means if you want more than eighty minutes there is no listed way to buy it as one booking. At least one customer solved this by buying two: 「60分＋80分の140分で予約させていただきました」 — I reserved 140 minutes as a 60 plus an 80. ¥42,000, ¥300.00 a minute, two courses stapled together because the board only comes in two sizes.
- キャンセル料 (cancellation) — no policy published.
- Room count — claimed as the district's largest, never quantified.
- Ages — seventy blanks, as above.
- Stamp card terms — a ¥8,000 ceiling on a banner, and 詳細は店舗スタッフまでお尋ねください for everything else. No stamp count, no qualifying course, no expiry.
And then there's the information that exists but is on the wrong page. The group's own site at kadoebi.co.jp/mugen carries a line the Cityheaven listing does not:
クレジットカード利用可（手数料無料）
Credit cards accepted, no processing fee. At a cash-culture business in a cash-culture district, that is a materially useful fact, and it appears on neither the Cityheaven price tab nor the shop-info block. It's also where you'll find the reservation windows spelled out: 前日PM12:00～ for next-day bookings and 当日AM7:30～ for same-day. One reviewer describes ringing at exactly noon to take a next-day slot the moment the line opened.
Two more small discrepancies, offered in the spirit of check before you walk. The shop's Cityheaven header says 池袋北口徒歩3分; its own shop-info paragraph on the same page says 池袋西口（北）徒歩５分！ — three minutes and five minutes, on one listing. And the name differs by platform: Cityheaven calls it 個室サウナ夢幻, the group's own site calls it 池袋夢幻. Same phone number, same address, two names and two walk times.
Neither will cost you money. Both are the fingerprint of a listing that gets updated in pieces.
537 Reviews, and What the Sub-Scores Say
Mugen's review board runs to 537 entries across nine pages. That's the fewest of the nine established soaplands in Ikebukuro — Wakaba has 2,606, Toroke-yu has 3,295 — which for a shop with seventy women and 151 woman-hours on a Wednesday tells you the customer base isn't a reviewing culture. Nineteen of the seventy women have no reviews at all, marked 口コミ募集.
I sampled the most recent 35 reviews carrying full sub-scores. Here's the shape:
| Category | Average |
|---|---|
| プレイ (service) | 4.80 |
| 女の子 (the woman) | 4.71 |
| Overall | 4.62 |
| 料金 (price) | 4.52 |
| 写真 (photos) | 4.52 |
Everything is high, and I want to be fair about that before drawing the line — a 4.52 is a good score. But the ordering is the interesting part. At a shop whose entire public argument is its price, 料金 is the joint-lowest sub-score on the board, tied with 写真 and a full 0.28 below the service rating. Twenty of thirty-five gave price a perfect 5; thirteen gave it 4 or below.
The repeat rate is genuinely strong: 15 of 35 were on their third-or-later visit, 6 on their second, 14 first-timers. A shop where 60% of recent reviewers have been before is not surviving on foot traffic.
And there's a theme in the prose that shows up too often to be noise. Three separate reviewers reach for the same comparison:
高級店での経験があり、60分でも高級店と同じ内容の洗い場プレイをして下さり She has experience at a luxury shop, and even in sixty minutes she gave me the same washing-area service as a luxury shop.
高級店かなと錯覚するくらい女の子のレベルが高かったので、スタンダードな価格帯で利用できるのはかなり破格で大満足です。 The level was high enough that I mistook it for a luxury shop — being able to get that at a standard price band is a steal.
この価格帯のお店でも安心して遊べる優良店だなと思いました。 Even at this price band, it's a solid shop where you can relax.
Three men, independently, describing Mugen by reference to somewhere more expensive. One of them went specifically because the manager's comment on a profile mentioned prior luxury-shop experience. Another recognised a woman from a high-end shop he'd been unable to book years earlier.
That's the shop's real product, and — consistent with everything else on this listing — it does not appear on the price board. The board says ¥19,000. The reviews say the reason the ¥19,000 is interesting is who is on the other side of it.
On the operational side the reports are unanimous and unglamorous: 待ち時間もほとんど気になりませんでした (barely any wait), 予約時刻の15分前に訪店して受付と会計を済ませました (arrived fifteen minutes early, checked in and paid), スタッフさんの対応がスムーズで (staff handling was smooth). For a shop selling itself on room count and throughput, the customers confirm the throughput.
About the Shop
| Shop | 個室サウナ夢幻 — Koshitsu Sauna Mugen (listed as 池袋夢幻 on the group site) |
| Type | Soapland, budget grade (激安) |
| Group | Kadoebi — 30 shops across 6 regions on the group's own site |
| Area | Nishi-Ikebukuro 1-44-9, Toshima-ku, Tokyo |
| Access | 3 min from Ikebukuro west (north) exit — the same page also says 5 min |
| Hours | 8:00–24:00, open year-round (today's shifts run 8:00–23:00) |
| Phone | 03-3988-4020 — say 「ヘブン見た」 |
| Prices | 60 min ¥19,000 total · 80 min ¥23,000 total |
| Nomination | ¥1,000 (net or in-person, same price) |
| Payment | Credit cards accepted, no surcharge (group site only) |
| Reservations | Next-day from 12:00 noon · same-day from 07:30 |
| Coupons / events | Both tabs empty — but a new-customer stamp card, MAX ¥8,000 off, runs on the header banner (from 2 Mar 2026; terms not published) |
| Extension / cancellation | Not published — ask |
| Roster | 70 women; no ages published |
| Today's staffing | 27 shifts, 151.5 woman-hours, peak 14 women at 17:00–20:00 |
| Reviews | 537 |
The Verdict
Mugen is the least-decorated listing I've read in months, and after a full day inside its numbers I think the plainness is the honest kind rather than the lazy kind.
Everything material about the price is disclosed. The figure is a total, not a base. The nomination fee is a thousand yen and covers both routes. There is no membership fee, no menu of options priced in five-thousand-yen steps, no percentage that turns out to be the same ¥5,000 wearing three different hats. The gaps that remain — extension, cancellation, room count, ages, and the entire terms of the stamp card — are gaps of omission on a listing that gets updated in pieces, not traps laid for people who read quickly.
Concretely, then.
Buy the 80 minutes. It is not a close call. The extra twenty minutes cost ¥200 each against a base rate of ¥316.67, the course lands at ¥287.50 a minute, and that is the third-cheapest rate in Ikebukuro's ten-shop soap market and the cheapest minute the Kadoebi group sells anywhere in this district. The 60-minute course exists so the shop can advertise ¥19,000. The 80 is the product.
Add the nomination fee. A thousand yen is 5.3% of the ticket and the single highest-leverage yen on the board, at a shop where three separate reviewers went out of their way to say the woman was the reason the price made sense — and where the roster gives you no ages to filter on, so the reviews are most of what you have to go on.
Go between five and eight in the evening for the widest choice, avoid three in the afternoon when the shift change thins the floor to nine, and don't plan on anything after 22:00 — the sign says midnight, the schedule says everyone leaves at eleven.
And if it's your first visit, ask about the stamp card before you pay. It is worth up to ¥8,000 — more than a third of the 80-minute course — it is restricted to new customers, and it is documented nowhere except a rotating banner that says to ask. Nobody at the desk is going to volunteer a discount you didn't request. Four words on arrival: スタンプカードはありますか。 Then ask how many stamps, on which courses, and until when, because none of those answers exist in writing.
Two lines on a price board and an ¥8,000 offer living in an image file. It's the shortest argument in Ikebukuro — and the only part of it I couldn't check all the way to the bottom is the part that pays you.