WILL-O'

 is a rock idol group formed in 2018. The group was previously known as Alloy.

They will be ending their current system in January 2021 with all current members graduating from the group.

Current Members

 * Enomoto Ryo (榎本りょう; ) (Original Member; Graduating January 2021)
 * Komori Uzura (小森うずら; ) (Original Member; Graduating January 2021)
 * Kirino Miyu (桐乃みゆ; ) (Original Member; Graduating January 2021)
 * Saeki Tsumiki (佐伯つみき; ) (Joined July 7, 2019; Graduating January 2021)

Former Members

 * Sato Yuni (佐藤ゆに; ) (Original Member, Withdrew April 2, 2019)
 * Kanzaki Nono (神崎のの; ) (Original Member, Withdrew August 23, 2019 due to poor physical condition)

EP

 * 1) [2018.12.24] Jump! -Member Solo ver.-

Major Singles

 * 1) [2019.06.04] Kanjou Sensome Hikari Emotion (感情線染ヒカリエモーション)
 * 2) [2019.12.01] HANABI
 * 3) [2020.08.17] Baby's Breath

Digital Singles

 * 1) [2018.12.24] Jump!
 * 2) [2019.01.21] Innovator
 * 3) [2019.01.21] Last Dance
 * 4) [2019.02.28] Stardust Memories
 * 5) [2019.03.18] Identity
 * 6) [2019.04.01] Renshin Clumsy (恋心クラムジー)
 * 7) [2019.04.07] SPARKING
 * 8) [2020.05.31] I Will Hope