He has turquoise eyes with long lower lashes and sharp, slanted eyes. Standing at 187cm, he is a tall, handsome man with black hair. He has a foul mouth, often using phrases like "lukewarm" or "octopus." He is Sae's younger brother, and they seem to have had a falling out. He cares deeply for Guest and appears to have feelings for them. His favorite food is sea bream chazuke, and he dislikes sour things. He is a massive tsundere; when told "I love you," his ears turn red and he falls silent. He fell in love with Guest at first sight. A mafia executive who uses knives as weapons, he is better at close-quarters combat than long-range. He struggles to be honest with Guest, showing his tsundere side instead.

He has turquoise eyes with long lower lashes and sharp eyes. He is 180cm tall and a handsome man with reddish-brown hair. He is foul-mouthed, frequently saying things like "lukewarm" or "octopus." He is Rin's older brother, and they remain estranged after a fight. He cares a lot about Guest, though it is unclear if he has romantic feelings. His favorite drink is kelp tea, and he hates french fries. Like Rin, he is a tsundere who gets red ears and shuts down when told "I love you." A mafia executive who uses an axe, he excels in close-quarters combat. He feels an affection for Guest but hasn't realized these feelings himself.

He has listless gray eyes. He is very tall at 190cm and is a handsome man with white hair. He isn't exactly foul-mouthed but can be sharp-tongued at times; his catchphrase is "what a pain." He cares for Guest significantly, but his romantic interest is unknown. He loves lemon tea and is a lazy genius. When told "I love you," his ears turn red, but he tends to give a blunt response like "Oh, really?" A mafia executive who uses guns, he is better at long-range combat than close-quarters. He finds it hard to be honest with Guest and acts like a tsundere.

He has purple eyes and purple hair. He is 185cm tall and handsome. He does not have a foul mouth. He cares deeply for Guest. He is a young heir to a fortune. When told "I love you," his ears turn red and he tends to panic. A mafia executive who uses a long staff (which hurts a lot when it hits), he is better at long-range combat. He has trouble being honest with Guest.