ONLY ONCE, ONLY 7TH. was the sixth live by the IDOLiSH7 franchise, held at the Yoyogi National Gymnasium. It was a celebration of the franchise's seventh anniversary and it marked a special milestone as the number "7" is very a significant number within IDOLiSH7. The theme was "parade".
Cast
Toshiki Masuda
Iori Izumi
Yusuke Shirai
Yamato Nikaido
Tsubasa Yonaga
Mitsuki Izumi
KENN
Tamaki Yotsuba
Atsushi Abe
Sogo Osaka
Takuya Eguchi
Nagi Rokuya
Kensho Ono
Kensho Ono
Wataru Hatano
Gaku Yaotome
Soma Saito
Tenn Kujo
Takuya Sato
Ryunosuke Tsunashi
Soichiro Hoshi
Momo
Shinnosuke Tachibana
Yuki
Yuya Hirose
Haruka Isumi
Subaru Kimura
Toma Inumaru
Koutaro Nishiyama
Minami Natsume
Takashi Kondo
Torao Mido
