Krays

 is an idol group that debuted in December 2021 as a sister group of ESTLINK☆.

Current Members

 * Shirosaki Riko (城咲りこ; ) - Leader (Founding member)
 * Yumeno Ruri (夢乃るり; ) (Joined pre-debut November 2021)

Former Members

 * Naruse Miyuu (成瀬みゆう) (Founding member; left pre-debut July 2021)
 * Arisu Kaho (有栖かほ) (Founding member; left pre-debut October 2021)
 * Ichinose Airi (一ノ瀬愛莉) (Founding member; left pre-debut October 2021)
 * Uzuki Miku (愛月みく; ) (Founding member; contract terminated May 2022)
 * Hanamori Shuna (花守珠奈; ) (Joined pre-debut November 2021; graduated July 2022)
 * Aino Ruka (愛乃るか; ) (Joined July 2022; Withdrew January 31, 2023)
 * Soramiya Yuyu (空宮ゆゆ; ) (Joined pre-debut November 2021; Graduated April 20, 2023)
 * Otohana Yui (乙花ゆい; ) (Joined July 2022; Transferred to Seven Day'z April 20, 2023)
 * Hoshino Rara (星乃心星; ) (Joined July 2022; Graduated April 20, 2023)

Singles

 * [2023.03.28] moonlight / Endless sky