R.I.P. Kenkyuujo

 (R.I.P.研究所) is a five-member Japanese idol group formed on December 7, 2021.

They made their stage debut on December 18, 2021 @Okubo K-Stage.

Members

 * Ichizu Anzu (いちずあんず; ) (Founding member)
 * Kuriki Remon (くりきれもん; ) (Founding member)
 * Meki (めき; ) (Joined August 11, 2022)
 * Yumemite Inori (夢御手いのり; ) (Joined August 11, 2022; Graduating July 7, 2023)
 * Kanon (かのん; ) (Joined August 11, 2022)

Former Members

 * Chiaki Yuuri (ちあきゆうり; ) (Founding member; Left April 2022)
 * Kagoshima Nana (篭島奈那; ) (Founding member; Graduated July 2022)
 * Usada Rion (兎田りおん; ) (Founding member)