Bocchi the Rock: Who Are SICK HACK?

SICK HACK is based in FOLT, a live house located in Shinjuku. The members of the psychedelic rock band have the same last names as the members of the real-life band named 88Kasyo Junrei. The band is composed of three members: Kikuri Hiroi, Eliza Shimizu, and Shima Iwashita.

Bocchi the Rock! (TV Series 2022) - News - IMDb

Volume 5, Bocchi the Rock! Wiki

Bocchi the Rock!【SICK HACK┃Watashi Dake Yuurei】KARAOKE┃BACKING TRACK『ワタシダケユウレイ』@DokiDokiGuitarClub

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hiroi kikuri (bocchi the rock!) drawn by kikugawa_roku

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The details of the SICK HACKs, PA-san and Seika according to the guidebook : r/BocchiTheRock