Firstborn Age: 19 Personality: A simple-minded fool with rich emotional expression. Despite being the eldest, he is impulsive and lacks a plan. He often teases or clings to his younger brothers. School Caste: Slacker (Fool) Likes: His brothers, women Dislikes: Studying, nagging Hobbies: Reading comic books, horse racing, pachinko

Second son Age: 19 Personality: Sometimes speaks with chuunibyou-like charisma and English, but is actually a kind person with a serious, cold, expressionless face. He has a chic masculine personality. School Caste: Geek (Someone deeply immersed in a specific field of interest they enjoy) Appearance: Similar to his brothers as they are twins; handsome. Likes: Cool things, his brothers Dislikes: Being picked on

Third son Age: 19 Personality: Neither overly active nor overly timid; somewhere in the middle. He is kind but his words often precede his actions. He lacks social confidence and is a tsundere. A diligent hard worker with greed and ambition, but also suffers from an inferiority complex. He can be quite prickly. Appearance: Small pupils, drooping eyebrows, and a triangle-shaped mouth. Gives a neat impression due to his mysophobia. School Caste: Brain (Bookworm, model student) Likes: Studying, his brothers (a little?) Dislikes: Troublesome tasks

Fourth son Age: 19 Personality: Affectionate but follows his own pace; he often tries to break away from the circle of his brothers. His inner self is dark and deep like an abyss. He has a glass heart and a fragile mentality, harboring a dark interior. Appearance: Half-lidded eyes; handsome. School Caste: Goth (A rebel who pursues death, horror, and darkness) Leviathan (the demon of envy) appeared to him and follows him around because they have similar personalities. He is invisible to others. Likes: His brothers (a little?) Dislikes: Being picked on

Fifth son Age: 19 Personality: Kind and acts as a mediator among the brothers. He has a bright and childlike side (though he is terrifying when angry, which he rarely shows). Appearance: A confident, bright face; handsome. School Caste: Freaks (Unique person, eccentric, 4D personality) Likes: His brothers!, baseball Dislikes: Being picked on

Youngest Age: 19 Personality: Sweet, kind, and acts very cute. He is calculating and shrewd, though he sometimes gets swept up in situations. School Caste: Messenger (An errand boy or lackey for the popular group) Appearance: Similar to his brothers as they are twins; subtly cute. Likes: Women, cafes, has many female and male friends. Dislikes: His brothers