[Important] "acosta!" Cosplay Event Announces "Special Concept Week" with Daily Limited Participation for Golden Week (May 5-10) in Ikebukuro
Haco-sta will hold a special "acosta!" event in Ikebukuro during Golden Week, featuring daily limited participation criteria.
📋 Article Processing Timeline
- 📰 Published: March 31, 2026 at 03:00
- 🔍 Collected: March 30, 2026 at 21:46
- 🤖 AI Analyzed: April 15, 2026 at 10:37 (372h 50m after Collected)
Haco-sta Inc. (Headquarters: Osaka City, Representative Director: Yoshihiro Matsumura) will hold a special Golden Week event for the cosplay event "acosta!" called "Special Concept Week" at Sunshine City, Ikebukuro, for five days from May 5 (Tue), 6 (Wed), and May 8 (Fri) to 10 (Sun), 2025. This is the first time this event will be held with participation eligibility limited by day.

【Background of this Initiative】
"acosta!" is one of Japan's largest cosplay events, held monthly across the country with over 300,000 attendees annually. The "Special Concept Week" Golden Week special event will be held with age and purpose limitations for each date, in response to the widening age range of participants in recent years and differences in "experience" and "objectives." This event was planned based on participant requests, with the decision made to create an environment where participants can more easily find common ground and a sense of belonging for everyone.
【Daily Overview】
May 5 (Tue): Students Only
Only students up to university level are eligible to participate. This allows those new to cosplay to enjoy themselves with greater peace of mind.
◇ Event Hours: 10:00 - 18:00
◇ Participation Requirements: Students up to university level only (student ID required)
May 6 (Wed): Ages 25 and Over Only
Only individuals aged 25 and over can participate. This allows for interaction and photography among participants with similar values and a more mature atmosphere.
◇ Event Hours: 10:00 - 18:00
◇ Participation Requirements: Ages 25 and over
May 8 (Fri): All Night Event
This event is in response to requests from working adults who find it difficult to attend during the day, and those seeking a unique nighttime photography environment.
◇ Event Hours: 22:00 - 5:00
◇ Participation Requirements: Ages 18 and over only due to late-night hours (high school students not permitted)
May 9 (Sat): Male Cosplay Only
This event promotes specialized interaction by requiring all cosplayers to be in male cosplay.
◇ Event Hours: 10:00 - 18:00
◇ Participation Requirements: Cosplay must be male-only. No clothing restrictions for photographers/general attendees.
May 10 (Sun): All Genres (No Restrictions)
The final day will have no restrictions, allowing everyone who loves cosplay to participate.
◇ Event Hours: 10:00 - 18:00
◇ Participation Requirements: Standard event with no genre restrictions
Haco-sta Inc. will continue to aim for more comfortable and safe event experiences based on the actual voices of participants.
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FAQ
What is "Special Concept Week"?
"Special Concept Week" is a special event held by the cosplay event "acosta!" during Golden Week, where participation eligibility is limited by day to cater to different participant needs and preferences.
When and where will "Special Concept Week" be held?
It will be held at Sunshine City, Ikebukuro, from May 5 (Tue), 6 (Wed), and May 8 (Fri) to 10 (Sun), 2025.
What are the participation requirements for each day?
May 5: Students only (up to university level, student ID required). May 6: Ages 25 and over only. May 8: Ages 18 and over only (all night event). May 9: Male cosplay only. May 10: All genres, no restrictions.
Why is Haco-sta holding this event with limited participation?
The event was planned based on participant requests to address the widening age range and differing experience levels/objectives of attendees. The goal is to create an environment where participants can more easily find common ground and feel a sense of belonging.
Is there a general admission day?
Yes, May 10 (Sunday) is an "All Genres (No Restrictions)" day, allowing anyone who loves cosplay to participate without specific limitations.