QUARTET NIGHT is a senpai group of ST☆RISH. They both belong to the same agent, 『Shining Entertainment group』.

The 4 members were originally working individually. However, they had a chance to work together as a unit for a limited time when Shining Entertainment Group held a Xmas live concert.

When ST☆RISH joined Shinning Entertainment Group, they were in the master course. Master course is a training system that a new group is trained under an assigned senior group.
QUARTET NIGHT was in charge of ST☆RISH to teach the members of ST☆RISH about singing techniques, knowledges and more as a senpai group. QUARTET NIGHT is also influenced by ST☆RISH as a unique unit. QUARTET NIGHT started working more actively after working with ST☆RISH.

The leader of QUARTET NIGHT. He is the oldest member.
After the Xmas event live, he was the one who suggested other members to keep working as a unit together. Multi-talented, cheerful, and happy personality.
He has a long history of working in the show biz. He seems very easy-going, but very serious about his work.

He is the bassist who loves rock’n’roll.
When he was working a part time job, he was scouted and jointed the agency. He often argues with Camus, but it does not mean they don’t get along each other. He does not trust people much. He is stubborn, and very proud of his job. While working with ST☆RISH and seeing their tight bond each other, he wanted to know more about members of QUARTET NIGHT. He is changing in a good way.

The youngest member of QUARTET NIGHT. Cool and mysterious. He does not talk much and does not show his emotions. His beautiful high pitch voice is called, Angel’s voice. Very strong singer and he has confident about his vocal technique. He loves food. He likes to eat food with unique smell or beautiful food.

He looks like a butler. Very smart looks. He is an idol from overseas. His personality is a little bit arrogant, so he often argues with Ranmaru. (He gets along with Ranmaru though.)
His teaching style is a little rude to Cecil, but he is always passionate about teaching. Cecil accepts his way and learns a lot from him. He has a beautiful borzoi named Alexander.