7☆3

 (pronounced Shichi-San) is a Nagoya-based idol supergroup made up of members from OS☆U, Re:Clash, Star☆T, dela, Nato☆Kan and Kinsei☆Giulietta.

Current Members

 * Osaki Yuuka (尾崎悠歌) (Re:Clash)
 * Nozawa Mariko (野澤方合子)
 * Momomiya Maya (桃宮まや) (Nato☆Kan)
 * Chino Kotoko (茅埜琴子) (Gallop+)
 * Natsukawa Ami (夏川愛実) (OS☆U)
 * Yamamoto Rio (山本莉央)
 * Kawasaki Narumi (川崎成美) (dela)
 * Asasora Shizuku (朝空詩珠紅) (Star☆T)
 * Orise Shizuki (織世しづき)
 * Kimura Shizuku (木村寧来) (Kinsei☆Giulietta)
 * Maron (まろん) (Kinsei☆Giulietta)
 * Yoshida Akari (吉田あかり) (Kinsei☆Giulietta)

Former Members

 * Yasumi Eiko (八角瑛子)
 * Ono Saki (大野咲貴)
 * RYO
 * Hashimoto Anna (橋本杏奈)
 * Kiyosato Chisei (清里千聖)
 * Ichikawa Kaede (市川楓)
 * Tamenaga Nanami (為永七海)
 * Nagao Shiori (長尾しおり)
 * Shimasaki Yuria (嶋﨑友莉亜)
 * Akagi Sayaka (赤木彩香)
 * Nakajima Sara (中島咲良)
 * Ito Chisami (伊藤千咲美) (Graduated September 29, 2019)

Albums

 * [2016.12.24] 16candles

Singles

 * [2015.11.11] Ageage☆Christmas (アゲアゲ☆クリスマス)
 * [2016.04.13] Sakura graduation / Yume no Katachi (桜 graduation/夢のカタチ)