15GERM-Re:boot

 is an idol group debuted on January 5, 2019 as 15GERM. Their genre is "Beat Pop".

They are considered the rebirth of the idol metal group ShiX.

At some point in 2021, they changed their group name from 15GERM to 15GERM Ace. They went on hiatus in May 2022, and returned in January 2023 as 15GERM-Re:boot.

Current Members

 * Yamamiya Mayana (ヤマミヤマヤナ; ) (Joined January 10, 2023)
 * Sasa Ayano (ササアヤノ) (Joined February 2023)
 * Stepping Yuutan (ステッピン・ユータン) (Joined April 2023)

Former Members

 * Miyamoto Ruu (宮本琉生) (Original Member; Withdrew June 12, 2019)
 * Minamori Ran (南森らん) (Original Member; Withdrew June 12, 2019)
 * Mamiya Roa (万宮ロア) (Joined February 2019; Left August 2019)
 * Otonoha Latte (音葉らて) (Joined June 2019; Graduated January 30, 2022)
 * Hotarubi Rei (​蛍陽レイ) (Original Member; Graduated January 30, 2022)
 * Akisora Rika (秋空李佳) (Original Member; Left May 2022)
 * Aimai Mii (愛妹みい) (Joined October 2019; Left May 2022)
 * Hanaeda Yozora (花枝夜空) (Joined October 2019; Left May 2022)
 * Kanukul (カンウクル; ) (Joined January 10, 2023; Left March 27, 2023)

Digital Singles

 * 1) [2019.11.23] Byosoku Centimeter (秒速センチメートル)
 * 2) [2019.11.23] music
 * 3) [2019.12.25] Joudan Janaize (冗談じゃないぜ)
 * 4) [2020.01.30] Nan Zenkaidemo (何千回でも)
 * 5) [2020.02.28] 21 CENTURY BOY
 * 6) [2020.06.01] bad invader
 * 7) [2020.11.20] Ramu (ラム)
 * 8) [2021.01.15] Qualia (クオリア)