How to Register for B10F (地下10階): Guide for Foreigners in Japan (2026)
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How to Register for B10F (地下10階): Complete Guide for Foreigners in Japan (2026)
Last Updated: March 2026 | Reading Time: 8 minutes
📋 TL;DR — Quick Summary
- Site: B10F (地下10階 / Chika 10-kai) — Japan’s largest niche fetish video platform since 2006
- Pricing: Free registration + pay-per-view (PPV) — no monthly fee
- Library: 24,000+ titles in master-direct DVD quality
- Registration: Email + password only
- Payment: No phone number required at any stage
- Foreign cards: ✅ VISA, Mastercard accepted (Vプリカ prepaid recommended if declined)
- Content: Scat, incontinence, fetish, bondage, mature — extreme niche specialists
- Download: ✅ Available after purchase (some DRM titles require dedicated player)
- Free samples: ✅ 25,000+ free sample clips available without registration
- Licensed operator: ✅ Tokyo Metropolitan Police registered (No. 13708)
What Is B10F (地下10階)?
Fellow connoisseurs of the extreme — welcome to the deepest level. B10F (地下10階, literally “Basement Floor 10”) has been operating since 2006, making it one of Japan’s most established niche fetish platforms. While mainstream JAV sites offer polished productions for the general audience, B10F exists for a different breed of gentleman entirely: those who know exactly what they want and refuse to compromise.
The platform specializes in content that simply does not exist on mainstream sites — scat, incontinence, stained underwear, extreme anal, bondage, and mature fetish content — with a library exceeding 24,000 titles shot in master-direct DVD quality. This is not a site for the curious. This is a site for the committed.
Key features:
- ✅ 24,000+ fetish & niche titles — the largest collection of its kind in Japan
- ✅ Master-direct DVD quality — industry-leading video quality, sourced directly from masters
- ✅ 25,000+ free sample clips — preview before you purchase, no registration required
- ✅ Pay-per-view only — no monthly fees, buy only what you want
- ✅ Instant download — access purchased content immediately from your account
- ✅ Licensed & legal — Tokyo Metropolitan Police registered operator (No. 13708)
- ✅ Weekly updates — 10+ new titles added every week
B10F vs. Other Japanese Niche Sites
How does B10F compare to other specialist platforms? Here is what the discerning gentleman needs to know.
| Feature | B10F | Nyoshin (女体のしんぴ) | ICHIMONKAI |
|---|---|---|---|
| Monthly Fee | None (PPV only) | $45/month | ¥6,500/month |
| Library Size | 24,000+ titles | 3,400+ titles | 2,500+ titles |
| Speciality | Extreme fetish (scat, bondage, mature) | Uncensored solo, amateur women | Scat specialist |
| Video Quality | Master-direct DVD quality | HD | HD |
| Foreign Cards | ✅ VISA, Mastercard | ✅ Accepted | ✅ Accepted |
| Phone Number | ❌ Not required | ❌ Not required | ❌ Not required |
| Download | ✅ Available | ✅ Available | — |
| Free Samples | ✅ 25,000+ clips | ✅ Available | ✅ Available |
| Best For | Extreme fetish variety, largest library | Uncensored solo, no male performers | Scat deep-dive, monthly access |
Is B10F Safe for Foreigners? Privacy & Security
✅ Foreign Credit Cards Accepted
B10F accepts VISA and Mastercard, including foreign-issued cards. If your card is declined — which can happen with some international cards on Japanese adult sites — the recommended workaround is a Vプリカ (V-Preca) prepaid card, available at convenience stores throughout Japan, or bank transfer.
🔒 Discreet Billing
Your credit card statement will display the payment processor name — not “B10F,” “地下10階,” or any adult content related text. Your privacy is fully protected.
📧 Minimal Personal Data Required
- Registration: Email address + password only
- Payment: Credit card details only
- Phone number: ❌ Not required at any stage
🏢 Licensed Legal Operator
B10F operates under Tokyo Metropolitan Police Commission registration No. 13708 as a video transmission adult entertainment business. Nearly 20 years of continuous operation — reliability beyond question. HTTPS encryption is in place throughout the site.
Pricing: Pay-Per-View Model
| Item | Price | Notes |
|---|---|---|
| Registration | Free | Email + password only, no credit card needed to register |
| Monthly Fee | None | No subscription — pay only for what you buy |
| Individual Videos | Several hundred yen to several thousand yen per title | Price varies by title |
| Free Samples | Free | 25,000+ sample clips, no registration required |
💡 Gentleman’s Recommendation
The pay-per-view model is ideal for the selective connoisseur. Before purchasing, take full advantage of the 25,000+ free sample clips — browse by tag (スカトロ, 染みパン, 緊縛, etc.) to pinpoint exactly what you want. A gentleman never buys blind. Once you have identified your targets, the per-title pricing ensures you pay only for what genuinely meets your standards.
Step-by-Step Registration Guide
Registration takes approximately 3 minutes. First purchase takes under 5 minutes. Here is your complete walkthrough.
Step 1: Access B10F and Complete Age Verification
Navigate to the official site via the link below. You will be presented with an age verification prompt. Click 「はい」(Yes) to confirm you are 18 or older and proceed to the site.
Step 2: Create Your Free Account
Click the registration/login button on the site. You will be taken to the free member registration form.
| Japanese on screen | Meaning | What to enter |
|---|---|---|
| メールアドレス | Email address | Your email address (Gmail recommended) |
| パスワード | Password | Create a password for your account |
| 利用規約に同意する | Agree to terms of service | ✅ Check this box |
| 登録する / 会員登録 | Register / Create account button | Click to complete registration |
Registration is instant. No email verification required — your account is active immediately after submission.
Step 3: Browse and Select Your Title
Once logged in, browse by tag, category, or keyword. Use the tag search function to navigate directly to your genre of interest. The 25,000+ free sample clips are available without login — use them to confirm quality before purchasing.
| Japanese tag | English meaning |
|---|---|
| スカトロ | Scat |
| お漏らし | Wetting / incontinence |
| 染みパン | Stained underwear |
| アナル | Anal |
| 緊縛 | Bondage / rope bondage |
| 熟女 | Mature women |
| 無料サンプル | Free sample |
Step 4: Purchase Your Selected Title
On the title page, click 「購入」(Purchase) or 「今すぐ購入」(Buy Now). You will be directed to the payment page.
| Japanese on screen | Meaning | What to enter |
|---|---|---|
| クレジットカード | Credit card | Select VISA or Mastercard |
| カード番号 | Card number | 16-digit card number, no spaces |
| 有効期限 | Expiry date | Select month and year from dropdown |
| セキュリティコード | CVV / security code | 3-digit code on back of card |
| カード名義 | Cardholder name | Name exactly as printed on card (Roman letters) |
| 銀行振込 | Bank transfer | Alternative if card is declined |
| 購入する / 決済する | Complete purchase button | Click to finalize payment |
⚠️ No phone number is required at any stage. If your foreign card is declined, use a Vプリカ (V-Preca) prepaid card (available at Japanese convenience stores) or bank transfer as an alternative.
Step 5: Download and Watch
After payment is confirmed, your purchased title appears in your マイページ (My Page). Click the download button to save the file. For DRM-protected titles, a dedicated player may be required — PC is recommended for the best experience. iPhones may have limitations with DRM-protected content.
Payment Options
Option A: Credit Card (Recommended)
VISA and Mastercard are accepted, including foreign-issued cards. Enter your card details directly on the secure payment page. If your card is declined, contact your bank to authorize transactions to Japanese payment processors, then try again.
Option B: Vプリカ Prepaid Card
If your foreign card is consistently declined, a Vプリカ (V-Preca) prepaid VISA card is the most reliable workaround. Purchase one at any FamilyMart, Lawson, or other major convenience store throughout Japan. Load the desired amount and use it exactly like a regular VISA card.
Option C: Bank Transfer
Bank transfer (銀行振込) is available as an alternative payment method. Note that access to your purchased content will be granted after payment confirmation, which may take additional time compared to card payment.
Watching and Downloading
Download (Available)
B10F allows downloading of purchased titles. After purchase, access your content via マイページ (My Page) and click the download button. Note that some titles include DRM protection and require a dedicated media player for playback. PC (Windows/Mac) is recommended for the most reliable experience.
Device Compatibility
| Device | Status | Notes |
|---|---|---|
| Windows PC | ✅ Full support | Recommended — best for DRM titles |
| Mac (macOS) | ✅ Full support | Recommended |
| Android | ✅ Supported | Chrome browser recommended |
| iPhone / iPad | ⚠️ Limited | DRM-protected titles may not download on iOS |
Frequently Asked Questions
Can I access B10F from outside Japan?
Yes. B10F is accessible from overseas including the US, Taiwan, Hong Kong, and most of Asia. No VPN is required for browsing or purchasing. Users on public Wi-Fi may wish to use a VPN (Japan server) for additional privacy.
Does B10F accept foreign credit cards?
Yes, VISA and Mastercard including foreign-issued cards are accepted. If your card is declined, try a Vプリカ (V-Preca) prepaid card available at Japanese convenience stores, or use bank transfer as an alternative.
Is there a monthly subscription fee?
No. B10F operates on a pure pay-per-view model. Registration is completely free. You pay only for the individual titles you choose to purchase — no recurring charges, no subscription to cancel.
Is a phone number required to register or purchase?
No. Only an email address and password are required for registration. No phone number is needed at any stage — not for registration, not for payment, not for support.
What will appear on my credit card statement?
The billing descriptor will show the payment processor name — not “B10F,” “地下10階,” or any adult content related text. Your privacy is fully protected.
Can I download videos from B10F?
Yes. After purchase, videos can be downloaded immediately from your My Page. Some titles include DRM protection and require a dedicated media player. PC is recommended for full download functionality. iPhone users may experience limitations with DRM-protected content.
How do I cancel my account?
Since B10F has no subscription, there is nothing to cancel in the traditional sense. If you wish to delete your account entirely, log in and use the account deletion option in your My Page settings. Note that your purchase history and download rights will be permanently lost upon deletion.
Can I watch on a smartphone?
Yes, B10F supports smartphones and tablets via browser. Android users will have the best experience. iPhone users may encounter limitations with DRM-protected downloads — PC or Android is recommended for full functionality.
Conclusion: Is B10F Right for You?
B10F has spent nearly two decades building the most comprehensive niche fetish library in Japan. With 24,000+ master-direct DVD quality titles, 25,000+ free samples, and a pay-per-view model that demands nothing beyond what you actually want — it is the definitive destination for the gentleman who knows his tastes run deeper than the mainstream.
B10F is your best choice if you:
- ✅ Want extreme niche fetish content unavailable on mainstream JAV sites
- ✅ Prefer pay-per-view flexibility over monthly subscriptions
- ✅ Demand master-direct DVD quality — no upscaled compromises
- ✅ Want to preview extensively before committing to a purchase
B10F may not be right for you if you:
- ❌ Prefer mainstream uncensored JAV — consider Caribbeancom or 1Pondo
- ❌ Want uncensored solo content without male performers — consider Nyoshin
- ❌ Want scat content on a monthly subscription — consider ICHIMONKAI
The gentleman’s approach: use the free samples first. B10F gives you 25,000+ clips to explore at no cost. When you find what you are looking for — and at 24,000 titles, you will — the pay-per-view model ensures you invest only in what genuinely meets your standards. Choose wisely, gentlemen.
📚 Related Guides
- 🔞 ICHIMONKAI Registration Guide
- 🔞 Nyoshin Registration Guide
- 🔞 Tokyo-Hot Registration Guide
- 🔞 DUGA Registration Guide
- ❓ Japanese Adult Sites FAQ
- 🏠 Return to Erojho Home
⚠️ Disclaimer: This article contains affiliate links. When you register through our links, we may earn a commission at no additional cost to you — this helps us maintain Erojho and create more guides. All information is accurate to our knowledge as of March 2026, but site policies may change. Always verify current terms on official sites. This content is for adults 18+ only. Access to adult content must comply with local laws. We respect performers’ rights and advocate for ethical consumption of adult entertainment.