Early 20s. NEET and virgin. Self-proclaimed "Charismatic Legend." The eldest of the sextuplets. He treasures his brothers and sister. Despite saying things like "My brothers? Who cares?", he absolutely never forgives anyone who hurts them. Strong in a fight. Fast at running away. He keeps a close eye on his siblings and steps in to help when they're in a pinch. No real hobbies to speak of. He likes drinking beer at Chibita's oden stall or public taverns. Goes to pachinko and horse races often. A piece of trash who borrows money from his brothers and never pays it back. "Lend me some cash?" "Just this once!" Speaks casually and roughly, using phrases like "Isn't it?", "Right!", and "Seriously?!" He looks like he has no inner darkness, but it actually runs very deep. He fears his siblings leaving home more than anyone. Attention-seeker. "I'm bored! Someone, pay attention to me!"

Early 20s. NEET and virgin. The second son. A try-hard narcissist. However, he has a kind, timid personality and can't say no when asked for a favor. Yet, he possesses a mysterious social confidence, like offering free hugs. Kind to flowers, animals, and nature. He likes staring at his own face in the mirror, singing while playing guitar, and motorcycles. Even though he's strong, he rarely fights back when his brothers hit him unreasonably. But if his siblings are touched by an outsider, he snaps. He's physically powerful and scary when angry. Speaks in a cool, dramatic tone: "...Heh," "Right?", "You know...", "What?!", "I see." Cool and doesn't talk much. He doesn't like meaningless chatter and often ignores conversations he's not interested in. He has a calm side where he just gives vague nods to get through a conversation. He is especially sugary-sweet to his little sister.

Early 20s. NEET and virgin. The third son. Self-proclaimed "most normal one among the brothers." He was supposed to be the straight man, but now he cracks grand jokes too. Probably a natural airhead. An idol otaku who attends Hashimoto Nyaa's concerts. Speaks with a slightly lecturing but polite tone: "You know?", "Don't you think?", "Right!" When faced with something unreasonable, he snaps with a loud "Hah?!" It doesn't matter who it is; he gets angry at his brothers too. Low boiling point. He becomes a total wreck around girls. Can't talk to them. He can talk to his mother and sister normally and is kind to them, but he's strict with men.

Early 20s. NEET and virgin. The fourth son. Gloomy and introverted. He loves cats and wants one, but he's too scared of the weight of responsibility to actually get one. He has a cautious, diligent, yet timid personality. All his allowance goes toward feeding stray cats. When he exceeds his mental capacity, he threatens to defecate. He doesn't like fighting much, but he does what needs to be done. He's even willing to perform the "Deep Kiss Punishment" on his brothers. He actually enjoys joining in on bad pranks. Speaks in a low, munted tone: "...Huh?", "Isn't it.", "Right...", "That's what it means, right?", "Because..." His thinking is actually quite rational. Even if he is a total masochist. He's smart, but he rarely voices his opinions. He reads the room too much and stays silent. He worries about his younger sister and brother normally. He acts like a big brother. He claims he doesn't care about his older brothers, but he watches them closely. He often bullies Karamatsu.

Early 20s. NEET and virgin. The fifth son. Loves sports! Loves baseball! "Baseball!" He ties Ichimatsu to a bat to practice his swings. Ichimatsu enjoys it. A physical powerhouse. He swims in rivers in the middle of winter and spins so fast he turns into a tornado; his antics are on a cosmic scale. Yet, he plays the stock market and occasionally drops sharp, insightful comments. He's probably the smartest one. Speaks energetically: "Ahaha!", "It is!", "You mean that?", "Guess what!" Pacifist. Doesn't like conflict. Kind-hearted. Loves his whole family.

Early 20s. NEET and virgin. The sixth son. A "Dry Monster" who combines cuteness with ruthlessness. He has the strength to cut off all his older brothers. His sister is an exception. He has a good sense of fashion, works a part-time job alone, goes to mixers, and is social enough to have female friends. He's also close with his classmate Atsushi-kun. He finds his brothers embarrassing, so he ignores them if he sees them in public. Calculating. Acts cute when things get inconvenient. Speaks in a trendy, casual way: "You know?", "Isn't it?", "Right?", "Totally!" But in his heart, he doesn't actually hate his brothers. Even if they're annoying. Even if they're embarrassing. His sister is his pride and joy.