Which singer is cited as a guest vocalist from Fruits Zipper?

Yui Sakurai is the Fruits Zipper singer cited as a guest vocalist in Rhythm Heaven Groove.

The game's music section names Sakurai as a guest singer from Fruits Zipper and credits her with performing “My Telepathy! Watashi no Atsui Kosen.” Ado is also listed as a guest singer, but she is not a member of Fruits Zipper, so she does not fit the question.

Fruits Zipper is a Japanese girl group formed in 2022 under Kawaii Lab. The group debuted digitally in April 2022 and includes seven members, with Sakurai among them.

The distractors can be confusing because Aimer, LiSA, and Ado are all prominent Japanese singers. However, the question asks for the artist’s group affiliation, not simply a famous vocalist associated with Japanese pop or anime music.