Party chuuuN!

Party chuuuN! is a Japanese four-member girl group formed on September 15, 2023, produced by Shimizu Rika, formerly of NMB48 and mignon. They made their performance debut on October 13, 2023, quickly gaining attention for their upbeat stage presence and idol sensibilities. Initially featuring Yamazaki Haru and Toyama Anzu alongside Shimizu Rika and Fuyuu Yukina, the group underwent a major lineup change in mid-2024. Following the graduation of Haru and Anzu, Party chuuuN! entered their 2nd season with the addition of Arisu Nana and Tsurumiya Arisa on August 12, 2024, marking a fresh chapter for the group. Under Rika’s guidance, the new lineup introduced an evolved sound and image that bridges playful charm with heartfelt idol performance. On April 27, 2025, Party chuuuN! released their double A-side single "Nemuri Renai Yoru Niha / Promise", showcasing both emotional depth and polished pop production. With this release, the group continues to define its identity in the crowded J-pop idol scene, backed by Shimizu Rika’s experience and a dedicated fanbase. The current members are Shimizu Rika, Fuyuu Yukina, Arisu Nana, and Tsurumiya Arisa.

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