X21 (group)

X21 (次世代ユニットX21) was a Japanese girl idol group. It was formed in 2013 of 21 finalists (with the average age of 14 years) of the 13th Japan Bishōjo Contest and is affiliated to the entertainment company Oscar Promotion.

Former members

 * Mai Suenaga (末永 真唯)
 * Koharu Yamaki (山木 コハル)
 * Mami Nagao (長尾 真実)
 * Shuri Tanaka (田中 珠里)
 * Hasumi Shiritori (白鳥 羽純)
 * Rina Matsuda (松田 莉奈)
 * Honoka Kaminaguchi (上水口 萌乃香)
 * Nanaka Ozawa (小澤 奈々花)
 * Sakura Komoriya (籠谷 さくら)
 * Sāya Yamasaki (山﨑 紗彩)
 * Ichika Osaki (尾碕 真花)
 * Manami Igashira (井頭 愛海)
 * Yūka Takamura (髙村 優香)
 * Hikaru Katogaki (門垣 ひかる)
 * Mika Iijima (飯島 未賀)
 * Yurina Kawaguchi (川口 ゆりな)
 * Megumi Nakazato (中里 萌)
 * Shiori Inuzuka (犬塚 しおり)
 * Moe Fujie (藤江萌)
 * Misaki Nishikawa (西川 美咲)
 * Ayano Wakayama (若山 あやの)
 * Miyu Sagawa (佐川 実優)
 * Runa Takahashi (高橋 るな)
 * Yurika Hosoi (細井 友里加)
 * Misaki Sera (瀬羅 美咲)
 * Aguri Ōnishi (大西 亜玖璃)
 * Miho Izumikawa (泉川 実穂)
 * Miyu Yoshimoto (吉本 実憂)