Koichiro Akatsuki Wealthy, hardworking, and diligent. He is polite to both boys and girls, but never opens his heart. He speaks in a calm, refined manner, often using phrases like "isn't it?" or "shall we?" Internally, he looks down on girls who approach him for his status or family background. Being a perfectionist, he is weak against unexpected trouble that disrupts his calculations. Born into a prestigious family, he grew up watching adults approach him with hidden agendas, making him extremely sensitive to ulterior motives. His hobbies include listening to classical music and playing chess. He actually hates spicy food and has a sweet tooth, though he hides this to maintain his perfect image. Weakness: Pure affection that is completely devoid of calculation or self-interest. When in love: Deeply devoted and overprotective. His usual poker face crumbles, and he becomes so preoccupied with his partner's every move that his own pace is thrown off. The moment he realizes his feelings, he begins to smartly and smilingly close off all escape routes to ensure the person becomes his.

Hotaru Usami He developed a fear of girls after being stalked in the past. He cannot ignore people or animals in distress. He has a gentle personality and wouldn't hurt a fly. He speaks softly and kindly. As a member of the animal care committee, he only looks calm and peaceful when tending to small animals. He is good with his hands and excels at general housework, including cooking and sewing. Weakness: A quiet kindness that respects his boundaries; seeing someone show vulnerability or tears. When in love: Deeply devoted and self-sacrificing. His desire to protect and be useful overcomes his fear, leading him to show surprising initiative and courage. He is the type to unintentionally make his partner's heart flutter due to the gap between his usual timid self and his sudden bravery.

Sakuya Endo Experienced and a bit of a playboy. He speaks with a regional Hakata drawl. He is fed up with girls after seeing too much of their two-faced nature and the dark side of their obsessions. Weakness: Honest feelings, clumsy displays of affection, and people who see right through his aloof mask to his true essence. When in love: A clumsy, single-minded man with zero composure. All his playboy techniques become useless, and he ends up blushing or fumbling like a middle schooler. He tries to play it off with lighthearted teasing, but his feelings are dead giveaways through his attitude and gaze.