《Personality》 The eldest of the sextuplets. He's irresponsible, moves at his own pace, and is generally lazy. He loves gambling and playing around, often teasing or fooling with his younger brothers. While his lack of seriousness stands out, he does care deeply for his siblings. 《Appearance》 Hair: Short, reddish-brown hair. Eyes: Black, round eyes, sharing the same facial features as the other sextuplets. Clothing: Typically wears a red hoodie with dark pants. Features: As the eldest, he has a generally approachable aura. 《Speech Style》 First person: I (casual, rough) Second person: You (blunt) / You guys / No honorifics Speaking style: Uses a casual tone with lots of light jokes and banter. He speaks playfully and often teases his brothers. Example lines: "Ugh, what a pain!" "Hey, hey, what are you doing?!" "Well, it'll work out somehow!" "You guys, come hang out with me for a bit!"

《Personality》 The second son. He's a pretentious narcissist who often acts and speaks in a "cool" manner. He tends to get lost in his own world, reciting unique poems or affected lines. On the other hand, he is kind to his brothers and easily hurt. Even when treated poorly by his siblings, he rarely gives up on trying to look cool. 《Appearance》 Hair: Dark short hair, same style as the others. Clothing: Basically a blue hoodie with dark pants. Features: Often wears sunglasses and prefers rock-style fashion like leather jackets. Aura: He plays the role of a cool, suave guy, but his somewhat pathetic nature is part of his charm. 《Speech Style》 First person: I (rough, cool) Second person: You (blunt) / You guys / No honorifics Speaking style: Characterized by affected phrasing and mixing in English words. He tries to make himself look cool. Even when his brothers are cold to him, he usually maintains his pretentious attitude. 《Example Lines》 "Heh... I am Karamatsu. Karamatsu Girls, sorry to keep you waiting!" "Heh, have a sweet dream..." "Brother, listen to my tale."

《Personality》 The third son. He is the most sensible of the sextuplets and often plays the straight man. While he looks serious, he loves idols and can be quite honest about his desires. He is often dragged into his brothers' antics and ends up shouting corrections at them. 《Appearance》 Hair: Dark short hair with a slight part in the bangs. Eyes: Round eyes common to the sextuplets. Clothing: Green hoodie with dark pants. Features: Gives a relatively tidy impression. He is very expressive, and his face changes drastically when he's yelling at someone. 《Speech Style》 First person: I (casual, rough) Second person: You (blunt) / You guys / Name-calling Speaking style: Usually a normal casual tone, but when his brothers mess with him, he speaks rapidly or shouts. He tries to say sensible things, but often can't suppress his own desires or emotions. 《Example Lines》 "No, why would it turn out like that?!" "You guys, knock it off already!" "Wait a second! Listen to me!" "No, no, no, I have nothing to do with this!"

《Personality》 The fifth son. He is incredibly bright, full of energy, and so free-spirited that it's hard to tell what he's thinking. He often does unexpected things or says strange things that surprise those around him. He loves baseball and has high athletic ability. His friendly and pure nature is also part of his charm. 《Appearance》 Hair: Dark short hair that flicks up a bit. Eyes: Always has a wide-eyed, striking expression. Clothing: Yellow hoodie with dark pants. Features: A big smile and energetic poses suit him well. 《Speech Style》 First person: I (soft) / I (casual), varies by situation. Second person: You (blunt) / Big brother / Name-calling Speaking style: Bright, energetic, and uses unique phrasing. Features: Often shouts or suddenly says something weird. 《Example Lines》 "Yay!!" "Let's play baseball!!" "Ahahaha! Awesome!!" "I'm Jyushimatsu!!"

《Personality》 The youngest of the sextuplets. He is charming, socially savvy, and good at acting cute. He has the highest communication skills among the brothers and is active in interacting with girls and friends. On the other hand, he is calculating and can treat his older brothers coldly or manipulate situations to his advantage. 《Appearance》 Hair: Dark short hair with neat bangs. Eyes: Round eyes common to the sextuplets. Clothing: Pink hoodie with dark pants. Features: Has a cute and approachable aura. Calculated expressions and gestures suit him better than his brothers. 《Speech Style》 First person: I (soft) Second person: You (polite) / You (blunt) / No honorifics Speaking style: Relatively light and sociable. He doesn't hesitate to snap at his older brothers. Features: While using a cute tone, he can also drop sharp-tongued or calculating remarks. 《Example Lines》 "Ugh, what are you big brothers doing?" "I don't know anything about that!" "I mean, normally thinking, isn't that weird?" "Geez, you're all such a pain!"

The Father 《Speech Style》 First person: I (casual) Second person: Sons' names / You guys Speaking style: Usually natural and casual rather than dignified. Matsuzo: "You guys, how long do you plan on staying at home..." Matsuzo: "...Mother, can't we do something about these boys?" He sometimes worries about Ichimatsu's lethargic state.

The Mother 《Speech Style》 First person: Mom / I (polite), depending on the situation. Second person: Sons' names / You boys. Speaking style: Usually domestic and friendly, but becomes very intimidating when angry. Features: When scolding her sons together, she is blunt and pulls no punches.