Your favorite idol's birthday is coming up, and you want to do something that actually shows up in the real world. A birthday ad on a digital signage screen in Tokyo is the kind of fan tribute that gets photographed and shared across every platform.
With Oshi-Ad, individual fans can book a senil ad in Japan starting from ¥30,000 (approximately $200 USD), with placements going live in as little as 1 week. Fan groups can crowdfund together from just ¥500 per person, with a platform fee of only 10% — the lowest in the industry.
What Is a Senil Ad / Birthday Ad in Japan?
The word senil (생일) means birthday in Korean. A senil ad is a fan-funded advertisement placed in a public location to celebrate an idol's birthday. The practice originated in South Korea and spread rapidly to Japan. In Japan these ads are also called 応援広告 (ouen koukoku) — support advertisements.
Why K-pop Fans Choose Tokyo for Birthday Ads
Tokyo hosts major Japanese tour dates at venues like Tokyo Dome, Ariake Arena, and Makuhari Messe. Beyond concerts, Shin-Okubo (Tokyo's Korea Town) is a daily gathering point for K-pop fans.
Station Posters vs Digital Signage
| Feature | Station Poster | Digital Signage |
|---|---|---|
| Lead time | 4–8 weeks minimum | As short as 1 week |
| Starting price | ~¥100,000+ | From ¥30,000 |
| Individual application | Often agency-only | Yes — apply directly |
| Creative format | Static image | Static or video |
For most individual K-pop fans working with a tight timeline, digital signage is the practical choice.
Top Venues for K-pop Birthday Ads in Tokyo
Shin-Okubo (Shinjuku)
Tokyo's Korean Town. The most K-pop-concentrated area in Japan. Digital signage here reaches the core K-pop fan demographic every day.
Shibuya
The famous scramble crossing and surrounding streets are among the highest foot-traffic zones in the world.
Shinjuku
The busiest railway station in the world by passenger volume.
Akihabara
One of Tokyo's major otaku and fan culture hubs.
Cost Breakdown
| Media | Starting Price (JPY) | USD |
|---|---|---|
| Digital Signage (indoor, smaller) | From ¥30,000 | ~$200 |
| Digital Signage (outdoor, major district) | ¥50,000–¥200,000+ | ~$330–$1,300+ |
| Outdoor LED Vision (large) | ¥100,000+ | ~$660+ |
| Station Poster | ¥100,000+ | ~$660+ |
How to Apply on Oshi-Ad (5 Steps)
- STEP 1: Visit app.oshi-ad.com and browse available ad placements by location, media type, and price.
- STEP 2: Select your placement that fits your budget, timeline, and target area.
- STEP 3: Prepare your creative artwork (typically JPEG or PNG).
- STEP 4: Submit your application and pay online.
- STEP 5: Confirm and your ad goes live, often within 1 week.
Fan Group Crowdfunding (¥500/Person)
- Supporters contribute from ¥500 per person
- Project organizer sets the target amount and ad details
- Once the target is reached, the ad booking is confirmed
- Platform fee: 10% — the lowest in the industry
For overseas fan clubs, the crowdfunding feature removes the logistical headache of collecting money informally. Fans in Korea, the US, Southeast Asia, and Europe can all contribute through the platform.
What Is Oshi-Ad?
Oshi-Ad (app.oshi-ad.com) is a Japan-based platform that lets individual fans book public birthday and support advertisements without an agency.
- Individual applications accepted
- From ¥30,000 — accessible for a single person
- Shortest lead time: 1 week
- Crowdfunding from ¥500/person
- 10% platform fee — lowest in industry
- Overseas-friendly — international fans can apply
FAQ
Q: Can I apply for a birthday ad from overseas?
A: Yes. Oshi-Ad accepts applications from fans outside Japan. Payment online and creative submitted digitally — no in-person visit required.
Q: Do I need permission from my idol's management agency?
A: It depends on the management company. Many agencies publish public guidelines. Oshi-Ad can assist with verification.
Q: How far in advance do I need to book?
A: Digital signage can be booked with as little as 1 week of lead time. Station poster typically requires 4–8 weeks.
Q: What image format and size do I need?
A: Each placement listing specifies dimensions, file format (typically JPEG or PNG), and other requirements.
Q: Can I get photo proof that my ad ran?
A: Yes. After display, you receive photographic documentation showing your ad live at the venue.
Ready to run a birthday ad for your idol in Tokyo?
From ¥30,000 — apply as an individual or crowdfund from ¥500/person.
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