Positive Monster

 (ポジティブモンスター), formerly known as Mori circle Idol Bu (森サークルアイドル部), is a Japanese idol group originally formed with four members in August 2021.

They made their stage debut on November 2, 2021 @Ebisu CreAto.

Their name Positive Monster was announced on November 21, 2021.

They're produced by Mori Fuuka.

Current Members
====2nd Generation - Joined February 26, 2022 ====
 * Saeki Natsumi (佐伯夏海; )

4th Generation - Joined January 11, 2023

 * Tanizaki Nanami (谷崎ななみ)
 * Yokomiya Mizuki (与子宮みず希)
 * Hinata Mayuki (日向真幸)

1st Generation

 * Hanasaki Suzuno (花咲鈴乃; ) (Withdrew February 23, 2022 )
 * Amane Mikoto (海音みこと; ) (Graduated August 25, 2022 )
 * Hitotoki Sara (春夏秋冬サラ; ) (Withdrew October 22, 2022)
 * Hiiragi Mii (柊木みぃ; ) (Withdrew October 30, 2022)

3rd Generation - Joined April 27, 2022

 * Naito Rina (内藤里奈) (Suspended September 30, 2022)

Digital Singles

 * 1) [2021.12.05] Positive Monster (ポジティブモンスター)
 * 2) [2022.08.11] RakiRaki Shining☆Day (らきらきShining☆Day)