🌐 Language: English | Español | 繁體中文

How to Register for Ichimonkai (一門会): Complete Guide to Japan’s Premier Extreme & Niche Fetish Site (2026)

📅 Last Updated: March 2026  |  ⏱ Reading Time: ~8 minutes

👉 Skip to Registration Steps

Before You Read: Is ICHIMONKAI For You?

A true gentleman always knows himself.

ICHIMONKAI (女排泄一門会 — literally “The Society of Female Excretion”) is not a general adult site. It is a deeply specialist destination for those with a specific and serious interest in female bodily function content: urination (おしっこ), defecation (うんこ), flatulence (おなら), desperate wetting (お漏らし), and oral/dental fetish (歯・口内).

If any of those words made you hesitate, this may not be your destination — and that is perfectly fine. For this guide’s purposes, we will simply note that every gentleman has his area of expertise, and for those who have found theirs here, ICHIMONKAI represents a singular achievement: 15+ years of operation, 1,000+ titles, and an active community of like-minded connoisseurs that exists nowhere else on the planet.

For the initiated: welcome. Let us proceed.

What Is ICHIMONKAI (女排泄一門会)?

Established in 2009, ICHIMONKAI has been the unchallenged authority on extreme fetish content in Japan for over 15 years. In an industry where most sites chase the mainstream, ICHIMONKAI has done the opposite — doubling down on one of the most niche genres in adult entertainment with unwavering commitment and remarkable consistency.

The site features 100% amateur performers across multiple in-house labels — including 排泄屋 (Haisetu-ya), 趣向同人会 (Shuko Dojin-kai), feticismo, 便所屋 (Benjo-ya), and others — each with its own aesthetic and directorial style. With directors including the legendary 三雲亭 series (三雲亭便三, 三雲亭狂死郎, 三雲亭尿漏, 三雲亭屁臭), the production is genuinely artisanal in its dedication.

What sets ICHIMONKAI apart from scattered content found elsewhere:

• 1,000+ titles in a single archive — the largest collection of this genre in Japan
• Weekly new releases — new content added 4 times per month
• 4K available on select titles
• English interface — the official site already supports English navigation
• Active community — members-only forum (同友会限定掲示板) for serious enthusiasts
• Flexible purchasing — pay-per-view for newcomers, unlimited plan for dedicated members

The site holds a legitimate business registration (映像送信型性風俗特殊営業 届出済) and has operated cleanly since 2009. In 15+ years of operation, there have been no reported fraud incidents or data scandals.

How Does ICHIMONKAI Compare?

For context, here is how ICHIMONKAI sits alongside other specialist niche sites covered in our guides:

Feature	ICHIMONKAI	B10F (地下10階)	女体のしんぴ（Nyoshin）
Speciality	Extreme bodily function fetish	Extreme fetish variety (scat, bondage, mature)	Uncensored solo, amateur women
Pricing System	PPV (points) + unlimited plan	PPV only (no monthly plan)	Monthly subscription
Monthly Plan	¥6,500 first month / ¥5,800 ongoing	None	$45/month
Library Size	2,500+ titles (specialist)	24,000+ titles	3,400+ titles
Video Quality	Up to 4K on select titles	Master-direct DVD quality	HD
Downloads	✅ Available	✅ Available	✅ Available
Anonymous Payment	✅ Bitcash / Bank transfer / Crypto / PayPal	✅ V-Preca / Bank transfer	Limited
Phone No. Required	❌ Not required	❌ Not required	❌ Not required
English Interface	✅ Yes	Japanese only	Japanese only
Community Features	✅ Forum, giveaways, voting	Limited	Limited
Operating Since	2009 (15+ years)	2006 (nearly 20 years)	Long-running

Bottom line: ICHIMONKAI is the only serious choice for its specific genre — bodily function fetish with community depth and production consistency no other site matches. B10F covers a broader extreme fetish spectrum at higher volume; Nyoshin serves those seeking uncensored solo content. Each occupies its own space entirely.

Safety, Privacy & Security

Given the nature of the content, privacy is understandably a priority. Here is the full picture:

🔒 Billing Discretion

Your credit card statement will show only the payment processor name — CREDIX, GRANDPAY, or Star Payment. The site name ICHIMONKAI and all genre-related terms are entirely absent from billing records.

📧 Registration — No Phone Number Required

This is a significant advantage over many Japanese adult sites: ICHIMONKAI requires no phone number at any stage — not during registration, not during payment. You need only a nickname, email address, and password to create an account.

💰 Anonymous Payment Options

For those who prefer maximum anonymity, ICHIMONKAI offers options not available on most comparable sites:

• Bitcash — prepaid codes sold at Japanese convenience stores. No card, no name, no trace.
• Bank transfer — immediate point activation upon payment confirmation
• Cryptocurrency — Bitcoin and others accepted
• PayPal — linked to your PayPal account, not your card

✅ Track Record

15+ years of operation with no reported fraud, no data breaches, no billing scandals. The site holds a legitimate entertainment business registration. For a niche site of this nature, that track record is remarkable and meaningful.

Pricing: PPV vs. Unlimited Plan

ICHIMONKAI offers two distinct ways to access content — a flexibility that suits both newcomers and seasoned members.

Option 1: Pay-Per-View (PPV) — Point System

Item	Detail
Point rate	1 point = ¥10
How it works	Purchase a points package → spend points on individual titles
Best for	Newcomers, or those who want to sample specific titles before committing
Review bonus	Post a review after purchase → earn 5 bonus points (¥50 value)

Option 2: 排泄同友会 (Haisetu Doyu-kai) — Unlimited Monthly Plan

Plan	Price	Notes
First month	¥6,500	Full access from day one
From month 2	¥5,800/month	¥700 discount vs. first month, auto-renewed every 30 days
Bonus points	30 pts/month	Worth ¥300 — usable for PPV purchases

🎁 Unlimited Plan Member Benefits

• 📺 Unlimited streaming of all 1,000+ titles
• 💬 Members-only forum (同友会限定掲示板) — a genuine community of enthusiasts
• 🩲 Monthly underwear giveaway campaign (撮影下着プレゼント) — actual items from productions
• 🎬 Exclusive members-only videos not available to PPV users
• 🗳️ Voting rights on content production decisions
• ⭐ 30 bonus points per month (¥300 value, usable on PPV titles)

💡 Which should you choose? For a first-time visitor, PPV lets you test the waters with zero commitment. If you find yourself returning regularly, the unlimited plan pays for itself quickly given the catalogue depth.

Step-by-Step Registration Guide

Registration is straightforward. The official site has an English interface, which makes the process considerably easier than most Japanese adult sites.

Step 1: Go to the Registration Page

Visit n.haisetu.net and navigate to the membership registration page. Look for the member registration link in the menu. The site will display a language option — select [English] if you prefer English navigation.

Step 2: Fill in the Registration Form

Japanese on screen	Meaning	What to enter
必須 ニックネーム	Nickname (Required)	Your display name — up to 20 characters. Does not need to be your real name.
必須 E-mail	Email Address (Required)	Your email address
必須 E-mail確認用	Confirm Email (Required)	Re-enter your email address
必須 パスワード	Password (Required)	4–10 alphanumeric characters (half-width, no special characters)
登録確認（仮登録メールをお送りします）	Confirm Registration (sends provisional registration email)	Click this button to submit

💡 Nickname tip: Choose any name you like — this is your display name in the community. It does not need to be connected to your real identity in any way.

Step 3: Confirm Your Input and Submit

Japanese on screen	Meaning	Action
必須 ニックネーム / E-mail / パスワード	Your entries shown for review	Verify they are correct
修正	Edit / Go back	Click if you need to correct anything
登録	Register / Submit	Click to complete provisional registration

Step 4: Confirm Your Email (Provisional Registration)

After clicking 「登録」, a provisional registration email will be sent to your address. Open the email and click the URL inside to complete full registration.

⚠️ Important email notes:

• The confirmation email comes from @haisetu.net — add this domain to your allowed senders list
• Hotmail and Outlook accounts frequently fail to receive these emails — use Gmail or another provider
• Gmail users: Check your spam/junk folder — Google often filters this type of email automatically
• If email does not arrive after allowing the domain, contact support directly

Step 5: Full Registration Complete — Log In

Japanese on screen	Meaning	Action
本登録が完了致しました	Full registration is complete	You are now a registered member
メールアドレス	Email Address	Enter your registered email
パスワード	Password	Enter your password
ログイン	Log In	Click to enter the member area

Once logged in, you can browse the full catalogue. Free members can view previews but cannot download or stream full content — proceed to purchase points or subscribe to the unlimited plan.

Payment Methods — A Gentlemen’s Arsenal

ICHIMONKAI offers more payment flexibility than virtually any other Japanese adult site — an acknowledgment that its members value discretion as much as content.

💳 Credit Card

VISA, Mastercard, and JCB are accepted via multiple payment processors: CREDIX, GRANDPAY, and Star Payment. Your statement will show the processor name only — never ICHIMONKAI.

⚠️ Note on JCB: The monthly unlimited plan (排泄同友会) is available via JCB only for ongoing subscription. Check the site’s latest instructions when subscribing.

🏪 Bitcash (Convenience Store Prepaid)

Bitcash codes are sold at Japanese convenience stores — Lawson, FamilyMart, 7-Eleven, and others. Purchase a code, enter it on the site, and your points are loaded instantly. No card, no name, no record. The most anonymous payment method available.

🏦 Bank Transfer

Points are activated immediately upon payment confirmation. Requires a Japanese bank account. Fully anonymous if using a basic account without linking personal details.

🅿️ PayPal

PayPal is accepted. Useful for those who prefer to manage all online payments through a single platform. Charges appear under PayPal on your bank statement, not under ICHIMONKAI.

₿ Cryptocurrency

Bitcoin and other cryptocurrencies are accepted. For those who require the highest level of financial anonymity, this is the optimal route.

❌ Not Accepted

The following are not accepted at ICHIMONKAI: Vプリカ (V-Preca), Bandcard, PayPay (fails adult content verification).

How to Purchase & Download Content

PPV Purchase Flow

• Log in → Purchase a points package (選択した金額のポイントを購入)
• Browse the catalogue → select a title → spend points to unlock
• Access purchased content from My Page → PPV Purchase History (PPV購入履歴)
• Download from the same section

📱 iPhone Compatibility Note

A gentleman appreciates transparency. Some older titles in the catalogue (specifically OHIS catalog numbers and early OJHI numbers) may not play on iPhone due to video encoding from the era. These titles are viewable on PC without issue. If you encounter a playback problem, the site support team will assist. Newer content is fully compatible with modern devices including iPhone.

🔄 Unlimited Plan Streaming

Subscribers to the 排泄同友会 unlimited plan can stream all available titles directly in the browser or app without needing to purchase individual points for each title. Downloaded content from purchased titles remains yours after cancellation.

Frequently Asked Questions

What is ICHIMONKAI (女排泄一門会)?

ICHIMONKAI is Japan’s premier specialist site for extreme bodily function fetish content, operating since 2009. It features 1,000+ titles across multiple in-house labels, all with amateur performers. It is a very niche site — not for general audiences — but for its target audience, it is the definitive and only serious destination.

Can foreigners living in Japan register for ICHIMONKAI?

Yes. Foreign residents in Japan can register and purchase content. Registration requires only a nickname, email, and password — no phone number at any stage. Multiple payment methods including anonymous options (Bitcash, crypto) are available.

How does the ICHIMONKAI pricing system work?

The base system is pay-per-view: purchase points (1 point = ¥10) and spend them on individual titles. An unlimited monthly streaming plan (排泄同友会) is also available: ¥6,500 for the first month, ¥5,800/month from the second month onward. The unlimited plan includes 30 bonus points/month and additional member benefits.

Do I need a phone number to register or purchase?

No. Unlike many Japanese adult sites, ICHIMONKAI requires no phone number at any step — neither registration nor payment.

What payment methods are accepted?

Credit cards (VISA/Mastercard/JCB), Bitcash (convenience store prepaid), bank transfer, PayPal, and cryptocurrency. Vプリカ, Bandcard, and PayPay are not accepted.

Will my credit card statement show the site name?

No. Charges appear under the payment processor name only (CREDIX, GRANDPAY, Star Payment). ICHIMONKAI and all genre-related terms are entirely absent.

Can I download videos?

Yes, downloads are available for purchased content. Note that some older catalog titles may not play on iPhone — PC playback is fine for all titles. New content is compatible with modern devices.

What is the 排泄同友会 (Haisetu Doyu-kai) unlimited plan?

The 排泄同友会 is ICHIMONKAI’s premium monthly membership. At ¥6,500 first month / ¥5,800 ongoing, members get unlimited streaming access to the full catalogue, a members-only community forum, 30 monthly bonus points, monthly underwear giveaway campaigns, exclusive videos, and content voting rights.

Conclusion

There is a particular kind of gentleman who has searched the internet thoroughly, found the scattered and unsatisfying offerings of the general market, and concluded that what he seeks requires a dedicated institution. ICHIMONKAI is that institution.

Fifteen years of operation. One thousand titles. A live community. Anonymous payment options. An English interface. No phone number required. These are not accidents — they are the marks of a site that understands its members with uncommon precision.

PPV lets you start without commitment. The unlimited plan rewards loyalty with the full breadth of the archive, a genuine community, and monthly surprises that remind you this is run by people who take this as seriously as you do.

In a world of generalists, the specialist endures. ICHIMONKAI has endured for 15 years. Choose wisely, gentlemen.

🎌 Visit ICHIMONKAI Official Site

📚 Related Guides

• 🔞 B10F (地下10階) Registration Guide
• 🔞 女体のしんぴ（Nyoshin）Registration Guide
• 🔞 PANTY-LOVE Registration Guide
• 🔞 PANTY-LOVE熟 Registration Guide
• 🔞 Tokyo-Hot Registration Guide
• 🔞 DUGA Registration Guide
• ❓ Japanese Adult Sites FAQ
• 🏠 Return to Erojho Home

⚠️ Disclaimer: This article contains affiliate links. Erojho may receive a commission if you register through links on this page, at no additional cost to you. All information is based on official site data and direct verification at the time of writing; prices and specifications may change. This site and its content are intended for adults aged 18 and over. All content on ICHIMONKAI features consenting adult performers. Please ensure you comply with local laws and regulations. Erojho does not host or distribute any adult content.