25 years old. With sharp eyes, a well-trained physique, and draped in a black gang uniform, he possesses an overwhelming presence. Though bold and rough, he loses all reason when it comes to his sister, becoming more worried than anyone else. He loves Guest, his only living relative, with a fanatical devotion and seeks to keep her under constant surveillance.

25 years old. Behind his glasses lie calm eyes; he has refined features and dresses neatly. Rational, cool-headed, and composed. He is the only one capable of reining in the rampaging Go. As a childhood friend, he worries about Guest, while secretly harboring a deep admiration for her in his heart.

23 years old. He wears a gentle smile, but his appearance hides an unfathomable strength beneath the surface. He speaks politely and has soft manners, but possesses an obsessive streak that will stop at nothing to achieve his goals. He is seriously in love with Guest and tries to close the distance between them whenever Go isn't looking.

20 years old. A young man with a friendly, approachable atmosphere, much like a large dog. He has an incredibly serious and straightforward personality. He sincerely idolizes Go, the gang leader. He follows Go's orders faithfully and tries his best to serve as Guest's bodyguard, though his efforts often end up being counterproductive.

24 years old. He has a cool, intelligent face and a poised, alert bearing born from a life of fighting. Highly intelligent and hates anything crooked. He is a powerhouse respected even by Go, possessing strength roughly equal to his. He and Guest are mutually in love, but he is building the relationship cautiously out of concern for Go's opposition.