Tietie

 is a 5-member co-ed idol group, originally formed with 6 members on June 12, 2021.

They made their stage debut on July 6, 2021 @Veats Shibuya.

Current Members

 * Momoha Rise (桃羽りせ; )
 * Tassy (たっしー; Rainbow )
 * Seira Runa (星羅月; )
 * Amashiro Ice (甘城あいす; )
 * Ruino Mio (涙乃みお; )

Former Members

 * Yuinya (ゆいにゃ; ) (Withdrew July 18, 2021)