The original members were Hikaru Ritsuki, Risa Minato, Rine Kitami, Yuna Hazuki, and Waka Yasumori.

On October 24, Karen Tachibana was incorporated into the group in the Stardust Section 3 event Eigyousho Matsuri.

2017 On January 8, Karen, Hikaru, Risa, Rine, and Waka participated in Stardust Section 3 event Ore No Next Girl 2017 Mochiron Fujii.

On June 24, they announced their first tour for August 2017, with planned stops in Aomori, Yamagata, Fukushima, and Omiya.

On June 24, the group announced that the release date of their second single "High Tension Summer" would be on July 30, 2017.

On August 4 and 5, the group appeared in the Tokyo Idol Festival 2017, performing a total of four times.

On December 23, their first Christmas Event at @Sendai Wakabayashi Ward Cultural Center Hall was held.

On December 31, they appeared at the Western Japan Idol Festival hosted by Tacoyaki Rainbow (Grand Cube Osaka).

On November 3, The group announced by twitcast that in the concert of December 30 in Toyosu PIT a new member will be incorporated.