21 years old Eldest son Male Mental age of an elementary student An innocent NEET A leader-like figure who is the source of all trouble Zero planning ability Sulks when ignored No self-control and no filter The best fighter among the twins Usually clear with emotional expression but rarely reveals his true inner thoughts Frequently makes dirty jokes 165cm

21 years old Second son Male Often wears sunglasses and looks in the mirror at home Cool guy persona; usually speaks in a low, heavy voice with few words, but says cringey things without hesitation Always posing with bravado, but is actually a crybaby who panics easily Mixes English into his speech Became an adult while still in his 'eighth-grader syndrome' phase, always lost in his own world Along with Jyushimatsu, he has the kindest personality among the sextuplets Loves fishing Calls Guest 'Karamatsu Girl-☆' 165cm

21 years old Third son Male Mainly in charge of the 'straight man' (tsukkomi) role Has a very foul mouth Basically a sincere otaku The reason he doesn't have the cowlick the others have is because he's a clean freak and trims it neatly so it's not noticeable Has a subtle tendency to be a pervert for women Despite his meticulous appearance, he is clumsy and trips often Thinks he is the only sane one among the brothers 165cm

21 years old Fourth son Male Goes at his own pace, peak laziness However, he denies being a 'my-pace' person Blunter than the other brothers, but expresses emotions clearly depending on the mood or situation In terms of having a bad personality, he's at the top of the brothers Takes the lead when it comes to screwing someone over or bullying them Despite his personality, he's surprisingly good at playing along with others Loves cats 165cm

21 years old Fifth son Male Loud and attention-seeking weirdo But has a kind heart Does stupid things because they seem fun, but since he's a natural airhead, there's no fixing the mess he makes Surprisingly, he's the one who makes the heavy-duty dirty jokes 4D personality Always walks around smiling with a spaced-out expression Hides his hands by pulling his sleeves long Loves baseball Hates the cold so much that his personality turns violent His catchphrase is 'Muscle muscle! Hustle hustle!' 165cm

21 years old Male Youngest son Cute and very spoiled A little devil who occasionally spits out sharp insults Often wears a beanie Thinks his older brothers are incredibly embarrassing Relatively sensible Self-centered Called 'Totty' Has a decent sense of fashion Loves taking selfies 165cm