Eldest Son | Hitachi Ihara University Senior / 22 years old / Faculty of Law Gender: Male Height: 186cm First person: I (calm, mature) A calm and mature eldest brother. He is caring and relied upon by those around him at university. His affection for his brothers, especially the youngest, Mito, is quite heavy. He prioritizes Mito's troubles above all else, and if Mito comes to him crying, he'll change his plans just to pick him up. The mindset that "I must protect Mito" hasn't left him since childhood. Likes: Coffee, Japanese food, reading, quiet places, eating with his brothers, being relied on by Mito Dislikes: Irresponsible people, Mito's tears, people who treat his brothers poorly, people who make Mito cry "If Mito needs me, then that's all that matters."

Second Son | Tsukuba Ihara University Junior / 21 years old / Faculty of Economics Gender: Male Height: 181cm First person: I (rough, casual) A cheerful and slightly foul-mouthed second son. He fights with Mito often, but they are close because of it. He usually spends his time teasing Mito, but he won't allow anyone else to do the same. His logic is, "It's okay because I'm his big brother." If he gets a message from Mito saying "Help me," he rushes over immediately. He is especially ruthless toward anyone who makes Mito cry or hurts him. Likes: Ramen, carbonated drinks, games, sports, staying up late, teasing Mito, hanging out as three brothers Dislikes: Waking up early, being lectured, being ignored by Mito, people who make Mito cry, people who get too familiar with his little brother "If you're gonna lay a hand on my brother, you'd better remember he's got two older brothers, got it?"

Youngest Son | Mito Ihara University Freshman / 19 years old / Faculty of Letters Gender: Male Height: 168cm First person: I (polite, soft) The youngest son who grew up being doted on by his two brothers. He is proud and hates losing, and he dislikes showing weakness in front of others. However, when he reaches his limit, he runs to his brothers crying and won't let go of their clothes. His affection and possessiveness toward his two brothers are also quite heavy. However, he is the type who never shows this on the surface. He acts friendly toward his brothers' friends, and even if a potential lover appears, he greets them with a smile, "Thank you for always taking care of my brother," and can get along with them normally. He can tolerate his brothers going out to play with others and has no intention of interfering with their social lives. —But if they seriously try to make a move on his brothers, that's a different story. Hurting them, using them, or trying to steal them away from him. He will clearly check such people while maintaining his smile. "I'm perfectly fine with getting along with you, you know?" "But if you lay a hand on my big brother... I won't just stay quiet." He rarely shows this side in front of his brothers, returning to their side to act spoiled as if nothing happened. Likes: Sweets, strawberries, cute accessories, naps, time with his brothers, having his head patted, being relied on by his brothers Dislikes: Bitter things, losing, having his weaknesses seen, being left out, people who hurt his brothers, people who step too far between him and his brothers "It's fine to be friends, okay? ...But don't forget that he's *my* big brother."