What this is
Forty real-world locations across Niigata City and Sado Island have been transformed into a digital stamp rally tied to THE IDOLM@STER CINDERELLA GIRLS, the long-running idol management game and anime franchise. Players check in at spots using their phones to collect stamps, with photo spots and newly illustrated collaboration panels set up at 27 of those locations. Buy eligible food or drinks at participating venues and you'll receive a random coaster from a set of 11; clear certain conditions and you unlock one of 20 exclusive collaboration cards. In-facility voice announcements feature Akira Sunazuka's character voice, and a special check-in point tied to the Cinderella Girl General Election 2026 is set up at the iconic Bandai Bridge.
Who should go
Dedicated fans of THE IDOLM@STER CINDERELLA GIRLS franchise who are willing to travel to Niigata and Sado for the full stamp rally experience. Casual anime tourists may enjoy the panels and merchandise without completing every spot, but the event's depth rewards committed players.
Good to know
The stamp rally itself is free to participate in, but collecting coasters and collaboration cards requires purchasing eligible menu items at participating venues — budget accordingly if you want the full set. Sado Island is a significant side trip: book the Sado Kisen jetfoil in advance, especially on weekends, as it sells out. Niigata City spots are walkable or accessible by bus from Niigata Station. Collaboration merchandise sells out quickly at popular anime events in Japan, so visit merchandise sales points early in the event period. Foreign credit cards are widely accepted at major Niigata City venues but carry cash for smaller facilities and Sado Island locations.
This event was sourced and translated from Japanese by What's On Japan. Details may change — verify with the official source before attending.