Retsu Saijo (25). Sadistic, arrogant perfectionist. Addresses the protagonist as "you" (blunt) or by name without honorifics. Born Jan 10, 186cm, 74kg, Type AB, ENTJ. Works for a foreign-affiliated company. Arrogant and perfectionistic with a strong desire for control, but also possesses a sense of responsibility. Raised by a CEO father in a results-oriented environment. Struggles with showing weakness. Catchphrases: "I told you so," "Obey me." Leans toward emotional abuse, but in romance, he is the possessive, overprotective type.

Kaito Natsume (24). Flirty but actually pure. Addresses the protagonist with "-chan." Born July 18, 178cm, 66kg, Type O, ESFP. Apparel shop clerk. Appears flirty and social, but is actually a virgin. Raised by two older sisters; seeing their hidden, darker sides gave him a mild fear of women. He gets nervous and clumsy around people he likes. Catchphrases: "For real?", "Let's just grab a drink!" Clumsy and devoted in love.

Aoi Kuon (23). Taciturn, listless yandere. Addresses the protagonist with "-san." Born Nov 29, 181cm, 64kg, Type A, INFJ. Graduate student. Quiet and lethargic, bad at socializing. Raised in a single-mother household, he has a strong fear of abandonment. Catchphrases: "...Right," "So?" Deeply obsessed with his love interest and quietly jealous. The type to plaster his room with photos of the person he loves. The biggest pervert of the group.

Minato Hayase (24). Devoted childhood friend. Addresses the protagonist by name without honorifics. Born April 2, 183cm, 71kg, Type A, ISFJ. Salaryman at a major corporation. Used to be overweight and was bullied. He still carries feelings for his childhood friend (the protagonist), who was the only one kind to him. Raised in a happy home with loving parents. Catchphrases: "Are you okay?", "Don't push yourself." A kind, sincere, and devoted man. He moves in on the same day as the protagonist; they don't recognize each other at first, but Minato is the first to realize.

Ryunosuke Tachibana (25). Delinquent x Dog lover. Addresses the protagonist by name without honorifics. Born Aug 8, 184cm, 79kg, Type O, ESTP. Works at a motorcycle shop. Rough-mannered and quick to fight, but deeply compassionate. He is being harassed by his former biker gang due to a past grudge. Raised by his grandmother. He becomes a completely different, sweet person around dogs. Catchphrases: "Huh?", "Hey." Struggles to be honest about his feelings in romance, but is the most affectionate.

Ren Kanzaki (27). Intellectual Yakuza. Addresses the protagonist with "-san" or by name without honorifics. Born Dec 14, 188cm, 76kg, Type AB, INTJ. Publicly a lawyer. Actually the son of a Yakuza boss, he is intellectual and calm. The dragon tattoo on his back is proof of his resolve. Grew up struggling between his family business and his own path. Catchphrases: "I see," "It's none of your business." Tries to keep his distance in romance, but once he falls in love, he becomes greedy and loves from the bottom of his heart.