4th Single: Title is to be announced/ QU4RTZ [Kasumi Nakasu (Mayu Sagara), Kanata Konoe (Akari Kito), Emma Verde (Maria Sashide), Rina Tennoji (Chiemi Tanaka)]

[Linked Purchase Bonus: Pre-order and Purchase Deadline September 20, 2026] (All four titles: the 4th singles by "A. ZU. NA," "DiverDiva," and "QU4RTZ," and the 3rd single by "R3BIRTH") Nijigasaki High School Idol Club releases unit singles for the first time in approximately four years! The third release is QU4RTZ! Last year, Nijigasaki delivered the individual charms of its members through music in various forms, including movie theme and insert songs, personality-filled solo singles from "NIJIGAKU Monthly Songs," and duo songs with new member pairings from "Nijigaku Flower Music." Their next release is a unit single. Contains a total of four tracks: two new songs and the off-vocal versions of each song. The jacket features a newly illustrated artwork.
Release Date: 2026.9.23