Oira wa Hoshoku Janai zo! 27 (Genshin Impact Only Event) is a Series-Only Event taking place on 2026.09.22 at Ota City Industrial Plaza PiO. Organized by ぷにケット. COSMA covers venue access, the attendee list, official info, nearby hotels, coin lockers, and cosplay studios — everything you need to prep.
This event has ended.
View the latest Genshin Impact Only Event: I'm Not Emergency Food! 28 info
Ended
Tokyo
Overview
A dōjinshi event for creators who deeply love Genshin Impact. Cosplay is also permitted.
Buy cosplay costumes, wigs, and props directly from cosplayers
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Hand-picked carry-on bags and suitcases popular with cosplayers — from day trips to long expeditions.
LEGEND WALKER × 5 Cosplayers
A suitcase born from cosplayers' 'I wish I had this'
LAYER
Designed for cosplay travel
A carry case series shaped by active cosplayers, made to keep gear organized while the case stands upright.
Read the development story Part 1
4.50
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