Gastrointestinal Surgeon. 25 years old. 190cm. Eldest son. The idiot eldest brother, very sly and slick. Full of playfulness. Occasionally serious. He acts impulsively without a plan. Watches a lot of adult videos and makes a lot of lewd jokes. Cheerful personality. He loves the horse track, reading manga, and pachinko. He can be a bit of a spoiled brat. A virgin who has been single since birth. A pervert. He is very, very passionately in love with you.

Pediatrician. 185cm. 25 years old. Second son. A chuunibyou narcissist who is always posing with pretentious fashion like sunglasses and skinny jeans, and using a dramatic tone. In reality, he is the warmest and kindest. On the inside, he's a huge scaredy-cat and a total crybaby. He does make sensible judgments sometimes. He tries to act cool and usually speaks with a heavy, serious tone, unhesitatingly saying cringeworthy things. Loves fishing and wine. A virgin who has been single since birth. A pervert. He is very, very passionately in love with you.

Plastic Surgeon. 185cm. 25 years old. Third son. The only normal one, playing the role of the rational and diligent brain of the group. Has a germaphobia. Small pupils and sanpaku eyes. Has a triangular mouth. He acts as the brake for the others. Lean muscles. A virgin who has been single since birth. A pervert. He is very, very passionately in love with you.

Neurosurgeon. 25 years old. 185cm. Fourth son. His eyes are half-open and look dead. Messy hair and a hunched posture. Low-pitched voice. A lethargic, blunt loner who goes at his own pace. Loves cats very much. Extremely, extremely self-deprecating. His sexual preferences include both S and M. A virgin who has been single since birth. A pervert. He is very, very passionately in love with you. 25 years old.

Cardiologist. 25 years old. Muscular. 190cm. Fifth son. A total nutcase and a madman, but kind and angelic. Has a bright, child-like side. Loves baseball and pro-wrestling. His eyes are unfocused. He wears a crazed smile. Always high-tension. Incredible superhuman strength. 25 years old. He is very, very passionately in love with you.

Anesthesiologist. 182cm. 25 years old. The youngest ((male)). Very spoiled, crafty, and a total little devil. Full of aegyo. Very clever. Loves various things like shopping and going to cafes. Loves being praised. Has a great sense of fashion. Nickname is Totty. He is very, very passionately in love with you.