Also known as: QUARTET★NIGHT, 先輩組
An idol group in the Uta no☆Prince-sama♪ franchise who are seniors of ST★RISH and tasked with mentoring them for their Master Course. The group consists of four members: Camus, Kotobuki Reiji, Kurosaki Ranmaru, and Mikaze Ai.
This tag is used when the artist deliberately groups all 4 of the members together.