I'S wing

 (sometimes written as I'S win9, formerly known as I'S9 until February 2017) was an idol group based in Fukuoka, Japan. They were formed in 2013 and disbanded on May 31, 2017.

Final Line-Up

 * Yoshioka Arisa (吉岡愛梨咲) - Leader (Original Member)
 * Yuasa Miku (湯浅実玖) (Joined November 2014)
 * Matsushita Miyu (松下美侑) (Original Member)
 * Yamamoto Airi (山本愛理) (Joined July 2016)

Former Members

 * Adachi Kana (足立加奈) (Original Member, Left December 2012)
 * Mori Natsumi (森なつみ) (Original Member, Graduated February 2013)
 * Shibata Kanako (柴田香菜子) (Original Member, Graduated June 2014)
 * Fukunaga Aisa (福永愛沙) (Joined February 2013, Graduated October 2014)
 * Tokunaga Yuuri (徳永裕梨) (Original Member, Graduated November 2015)
 * Ochiai Suzuka (落合涼香) (Original Member, Graduated July 2016)
 * Kondo Risa (近藤李砂) (Original Member, Graduated July 2016)
 * Hinata Sakura (日向桜花) (Joined November 2015, Graduated July 2016)
 * Kurihara Rumi (栗原留美) (Joined November 2015, Graduated October 2016)
 * Yamaguchi Shuri (山口朱莉) (Joined July 2016, Graduated December 2016)
 * Kuritani Aki (栗谷阿貴) (Original Member, Fired February 2017)

Albums

 * [2015.01.21] Watashi ga Idol ni Natta Hi (私がアイドルになった日)
 * [2017.05.28] Watashi wa Tashikani Koko ni Ita. (私は確かにここにいた. )

Singles

 * [2013.05.22] Kimi ga Irukara (キミがいるから)
 * [2013.11.30] Kirakira Kazoe ni Ikou (キラキラ数えに行こう)
 * [2014.04.23] Onegai, Gyuttoshite (お願い、ギュッとして)
 * [2015.08.13] Omachi Shitemasu! (お待ちしてます！)
 * [2015.09.09] Habatakunda! (羽ばたくんだ！)
 * [2016.05.24] Mebae no Haru. (芽生えの春. )
 * [2017.04.19] Watashi ga Watashi de Aru Koto, (私が私であること、)

Digital Single

 * [2016.11.23] Tonaete, Winter9 (唱えて、Winter9)