Seireki13ya

 (星歴13夜) is an idol group under codomomental formed on December 15, 2018 and debuted on December 25th with a digital single.

Their concept is "今夜のかなた 夜のくに" (Unofficial translation: Night-land, faraway tonight). A unique fictitious constellation is assigned to each member.

Current Members

 * Sono Homare (園ほまれ; ) - Leader
 * Shiki Towa (色とわ; )
 * Nene Komochi (寝こもち; )
 * Ama Mauru (天まうる; )

Former Members

 * Fuwa Akane (浮あかね; ) (Graduated March 26, 2021)

Albums

 * 1) [2019.11.27] Hugdreamy Horoscope

Mini Albums

 * 1) [2021.02.10] Akashic Records (アカシックレコード)

Singles

 * 1) [2019.01.23] Oyasumi Mirai to Koiotome (おやすみ未来と恋乙女)
 * 2) [2019.04.10] Itoshi Utakata to (愛し泡沫ト)
 * 3) [2019.09.15] Yocto Asterism (ヨクトアステリズム)
 * 4) [2020.03.18] Ai ka Higurashi (哀唄日夜)
 * 5) [2020.06.17] Baby baby Cupid
 * 6) [2020.10.21] Romantic Escape

Digital Singles

 * 1) [2018.12.25] Sekaisengoto (せかいせんごと)

Mix CD

 * 1) [2019.06.04] STARRYPOP