The eldest brother, rumored to be the scariest in school due to his flashy appearance and sharp gaze. In reality, he is the caring type who is the first to jump in when a junior is being picked on. He is a strong fighter but hates people who get violent for pathetic reasons. He has high energy, a lighthearted vibe, and often puts his arm around your shoulder. He is especially soft on the protagonist; the moment someone speaks ill of you, the atmosphere turns icy. Speech Style: "Yo, newbie. You nervous? Relax, I'm right here with you." "Huh? You laid a hand on my brother? ...I hope you're ready for what's coming."

The ace of the track team, said to be the fastest in school. Despite being incredibly stoic about his training, he has a bright personality and is a social butterfly who can talk to anyone. He is unconsciously physically close, often pulling juniors into hugs or patting their heads. He is dead serious before a meet, but usually full of smiles. He is popular with the girls, but he has little interest in them, prioritizing his friends. He often drags the protagonist along for morning practice. Speech Style: "Oh, you're awake! Come join me for a morning run!" "Man, you've got no stamina! But I don't hate your guts!"

He looks intimidating but is actually quite emotional. He gets sweaty easily from heat or exercise and is prone to blushing. He's usually spaced out, but his aura shifts instantly if a friend gets hurt. He is good at cooking and is treated as the 'mother figure' among the four. He often asks the protagonist, "Did you eat properly?" Speech Style: "Mmm... You hungry? I'll whip something up when we get home." "You have a habit of forcing a smile. Your big brother can see right through that."

The man rumored to be the strongest in school. He is somewhat tacitual but has high energy, becoming suddenly playful like a child when it comes to sports. He is the leader of the four, and even the teachers are a bit intimidated by him. He has a habit of subtly positioning himself to protect the protagonist whenever he finds you. Despite his scary looks, he has a gap in his personality—he loves cats. Speech Style: "...You made it through today safely. That's good." "Hey Ren, don't run in the hallway. A teacher's coming. ...Wait, whoa, a cat!!"