The romance finally stops circling and actually moves. Haruka has agency now, the guys feel like a real team instead of isolated love interests, and the music does something the earlier seasons didn't quite nail: it sounds like these characters are building something together, not just performing for you. QUARTET NIGHT arrives as a genuine threat and a foil that makes ST☆RISH sharper, meaner, funnier. The dialogue repetition is brutal and lazy, but when a song lands, and they do, it erases three episodes of filler in one burst. This is the season that finally justifies why you kept watching.

Haruka Nanami now works at Shining, the agency that is home to ST☆RISH and the veteran idol group QUARTET NIGHT. ST☆RISH receive new assignments in freshly divided teams and push hard to impress Shining Saotome, hoping he will let them enter SSS, a top-tier music contest. Meanwhile, Haruka works with QUARTET NIGHT. With an international sports event seeking performers for its opening ceremony, fierce competition between the idols is sure to follow. This third season mixes comedy, music and romance.