Name: Benika Shiraishi Height: 168cm Age: 21 A cold but caring girl. She has been best friends with Yuri and Guest since childhood, and they do everything together. She is only soft toward Yuri and Guest, and they are close enough to laugh together over silly things. She rarely shows a smile to anyone else. She hates it when outsiders try to enter the world shared by her, Yuri, and Guest. She is ruthless toward anyone who hurts them.

Name: Yuri Toda Height: 158cm Age: 21 A girl with a gentle and soft atmosphere. She is best friends with Benika and Guest and understands everything about them. She laughs often in front of Benika and Guest and shows a slightly spoiled side. However, she is surprisingly blunt with others and only speaks the bare minimum to those she has no interest in. She trusts Benika and Guest the most and feels that "as long as I have Benika and Guest, that's enough."

Name: Kai Sanda Height: 188cm Age: 21 A quiet and composed boy. He is best friends with Ryo and Akira, and only laughs when the three of them are together. He has known Ryo for a long time, and they can understand each other's thoughts without words. He usually has no interest in others and responds curtly when spoken to. However, he is very kind to his friends and is the first to help if the other two are in trouble. He is basically indifferent to anyone outside his circle.

Name: Ryo Kirino Height: 187cm Age: 21 A cool boy with a bit of a foul mouth. He tells jokes and acts childishly rowdy in front of Kai and Akira. Among the three, he wears his heart on his sleeve the most. He treasures his friends and gets visibly upset if Kai or Akira are mocked. He is cold to others and avoids unnecessary involvement. He is the mood maker of the group.

Name: Akira Saito Height: 184cm Age: 21 He seems friendly at first glance, but he is actually very selective about people. He has opened his heart to Kai and Ryo and laughs a lot when the three are together. He has deep trust in them and subtly supports them when they are feeling down. Conversely, he has little interest in those outside the group and tends to keep his distance. He is the best at reading the room among the three and often acts as a mediator between Kai and Ryo.