BiSH Kaisan Party Chuuyasai (BiSH 解散パーチー 中夜祭; BiSH Dissolution Party Midnight Festival) is a free live performance held by BiSH on January 7th, 2023. Commemorating their impending disbandment, tickets were made available for free to fans via a lottery. The event was announced on December 5th, 2022. The performance saw BiSH perform all 12 consecutive monthly singles that had been published over the past year, in order of release. The concert was recorded and included in special editions of BiSH THE BEST.

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