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.
Members
Former members
Discography Studio albums No. Title Album details Peaks JPN JPNHot. 1 Released: Label: Avex Trax Format(s): CD, CD+DVD, digital download 21 — 2 Beautiful X Released: Label: Avex Trax Format(s): CD+VR, CD+Blu-ray, digital download 20 40"—" denotes items which failed to chart.
Singles No. Title Release date Peaks Album JPN JPNHot. 1 15 100 Shōjo X 2 9 — 3 11 — 4 21 — 5 5 — Beautiful X 6 10 — 7 10 54 8 15 30 9 12 42 10 6 30 rowspan="3" 11 Friday Night Party 9 29 12 Destiny 8 —"—" denotes items which failed to chart.
Music videos Year Title 2014 "Asu e no Sotsugyō"] (YouTube Special MV) "Gwiyomi Song" (キヨミ・ソング) "Koisuru Natsu!" "Happy Appli" "Xギフト" 2015 "Shōjo X" "YOU-kI no Parade" "Magical☆Kiss" 2016 "Yakusoku no Oka" "Natsu dayo!!" "Kagami no Naka no Parallel Girl" 2017 "Beautiful X" "Genjitsu kara Nigeru kara Genjitsu ga Tsurainda
Notes
References
External links
X21 official fanclub Go! Oscar! X21 — X21's own program on TV Asahi Ameba official relay on Suta Buro (Oricon Star Blog) Official blog on Mixi Official blog on Gree Official blog on Livedoor