WILL-O'

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

Their latest system ended on March 31, 2021, with all members graduating. The group reopened their website from April 15, 2021, but have not been active since.

Final Line-Up

 * Enomoto Ryo (榎本りょう; ) (Original Member; Graduated March 31, 2021)
 * Komori Uzura (小森うずら; ) (Original Member; Graduated March 31, 2021)
 * Kirino Miyu (桐乃みゆ; ) (Original Member; Graduated March 31, 2021)
 * Saeki Tsumiki (佐伯つみき; ) (Joined July 7, 2019; Graduated March 31, 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)

Albums

 * 1) [2020.12.25] Pack TRACKS

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
 * 9) [2020.12.25] Face Myself
 * 10) [2020.12.25] 4RAW