Cosplay Festival 'Ultra acosta!2026' with 20,000 Participants to be Held in Ikebukuro from 9/4-6
Key facts
- Cosplay Festival 'Ultra acosta!2026' with 20,000 Participants to be Held in Ikebukuro from 9/4-6
- Hacosta Inc. announces 'Ultra acosta!2026,' a large-scale cosplay festival to be held from September 4-6, 2026, at Ikebukuro Sunshine City. This event, which attracted 20,000 visitors in its previous iteration, will feature photo sessions, stage events, an all-night program, and a cosplay-themed market called 'acosta! Marche'.
- Source: PR Times
- Date: April 2, 2026
Direct answer
Hacosta Inc. announces 'Ultra acosta!2026,' a large-scale cosplay festival to be held from September 4-6, 2026, at Ikebukuro Sunshine City. This event, which attracted 20,000 visitors in its previous iteration, will feature photo sessions, stage events, an all-night program, and a cosplay-themed market called 'acosta! Marche'.
- Citation
- Cosplay Festival 'Ultra acosta!2026' with 20,000 Participants to be Held in Ikebukuro from 9/4-6 (April 2, 2026), PR Times
- Source
- PR Times
- Date
- April 2, 2026
Hacosta Inc. announces 'Ultra acosta!2026,' a large-scale cosplay festival to be held from September 4-6, 2026, at Ikebukuro Sunshine City. This event, which attracted 20,000 visitors in its previous iteration, will feature photo sessions, stage events, an all-night program, and a cosplay-themed market called 'acosta! Marche'.
📋 Article Processing Timeline
- 📰 Published: April 2, 2026 at 21:30
- 🔍 Collected: April 2, 2026 at 13:35
- 🤖 AI Analyzed: April 17, 2026 at 06:10 (352h 35m after Collected)
Hacosta Inc. (Head office: Osaka City, Representative Director: Yoshihiro Matsumura) announces that it will hold 'Ultra acosta!2026,' a super-expanded version of the cosplay event acosta!, for three days from Friday, September 4 to Sunday, September 6, 2026, at Ikebukuro Sunshine City.
'acosta!' is one of Japan's largest cosplay events, where you can take photos and have fun, held nationwide with Ikebukuro as its center, attracting over 300,000 attendees annually.
'Ultra acosta!', now in its 5th iteration, is a super-expanded version of 'acosta!' held at Ikebukuro Sunshine City. Its 4th event in July 2025 attracted 20,000 visitors over three days.
This event, held over three days from Friday, September 4 to Sunday, September 6, 2026, will feature photo sessions and interactions by cosplayers and photographers at venues such as Exhibition Halls A (2, 3), B, C, and D within Sunshine City, as well as stage events at Fountain Plaza. On Friday, September 4, as 'All-Night Ultra acosta!' from 10 PM to 5 AM the next morning, visitors can enjoy the event in Sunshine City late at night, a time when it is usually inaccessible. Furthermore, on Saturday, September 5, it has been decided to hold 'acosta! Marche,' a doujinshi sales event and flea market specializing in cosplay, and many popular cosplayers are scheduled to participate. Other plans will be announced at a later date.
'Ultra acosta!2026' Official Website https://acosta.jp/event/ultra-acosta/
"Ultra acosta!2026" Event Outline
Date and Time: September 4, 2026 (Fri) 22:00 (10 PM) - 29:00 (5 AM the next day) / September 5 (Sat) and 6 (Sun) Both days 10:00 AM - 6:30 PM
※Note: Photography for "All-Night Ultra acosta!" on September 4 (Fri) is until 28:00 (4 AM)
※Note: Photography for "Ultra acosta!" on September 5 (Sat) and 6 (Sun) is until 17:30 (5:30 PM)
Venue: Ikebukuro Sunshine City (3-1-3 Higashi-Ikebukuro, Toshima-ku, Tokyo)
Organizer: Hacosta Inc.
Management and Production: Hacosta Inc.
Co-organizer: Sunshine City Co., Ltd.
【NEWS RELEASE】
Event Outline
Cooperation: Toshima Ward, Animate Co., Ltd.
Official Website: https://acosta.jp/event/ultra-acosta/
Official SNS: X (https://x.com/Uacosta_JP)
Official TikTok (https://www.tiktok.com/@acosta_jp)
FAQ
What are the exact dates and location for the Ultra acosta!2026 cosplay festival?
The Ultra acosta!2026 festival will take place from Friday, September 4 to Sunday, September 6, 2026, at Ikebukuro Sunshine City in Tokyo.
How many visitors attended the fourth Ultra acosta! event held in July 2025, and over how many days?
The fourth Ultra acosta! event in July 2025 attracted approximately 20,000 visitors across a three‑day period.
Who serves as the representative director of Hacosta Inc., the company organizing Ultra acosta!2026?
Yoshihiro Matsumura holds the position of representative director at Hacosta Inc., the organizer of Ultra acosta!2026.
What is the schedule and purpose of the All‑Night Ultra acosta! event on September 4, 2026?
On Friday, September 4, 2026, the All‑Night Ultra acosta! runs from 10 PM until 5 AM the following morning, allowing visitors to enjoy Sunshine City after regular hours.
Which additional event is planned for Saturday, September 5, 2026, and what activities will it feature?
Saturday, September 5, 2026, will host acosta! Marche, a doujinshi sales and cosplay‑themed flea market where many popular cosplayers are scheduled to participate.