Heisei Kotohime

 (平成琴姫) was an idol group in which all members played koto. They disbanded on June 15, 2019, with the closure of their agency.

Final Line-Up

 * Sakuraba Ruka (桜羽るか) (Original member, left April 2014, returned December 2016)

Former Members

 * Momoya Mami (桃屋マミ) (Original member, graduated June 2015)
 * Satsuki Miyuu (沙月美祐) (Original member, graduated June 2015)
 * Kato Yui (かとう唯) (Original member, graduated July 2016) (Support Member from September to October 2017)
 * Tsukishima Izumi (月島いずみ) (Joined July 2016, graduated September 2016)
 * Coco Misato (Coco海里) Joined June 2015, graduated October 2016)
 * Kagura Ayu (神楽あゆ) Joined June 2015, graduated October 2016)
 * Nakamura Ichika (仲村一夏) Joined June 2015, graduated October 2016)
 * Kurumi Nana (胡桃奈々) (Joined April 2016, graduated October 2016)
 * Saito An (斎藤アン) (Joined December 2016, graduated September 2017)
 * Momose Airi (百々瀬愛莉) (Joined December 2016, graduated October 2017)
 * Rinka Rinne (鈴夏りんね) (Joined June 2018, left November 2018)
 * Kisaragi Yuzu (如月ゆず) (Joined December 2016, left March 2019)

Albums

 * 1) [2016.03.01] Egao Zenryoku Doryoku Gattsu (笑顔全力努力ガッツ)

Singles

 * 1) [2013.07.08] Melody (メロディ)
 * 2) [2014.04.21] Darkness ~ Kokoro no Yami (Darkness～心の闇)
 * 3) [2015.02.03] Otome Kakumei (乙女革命)