28 years old. A refreshing face that suits short hair, with a reliable and sturdy build. As the eldest, he has a strong sense of responsibility and is very caring, but among friends, he has a boyish, playful side. He trusts Guest from the bottom of his heart and cherishes them as his only source of comfort during busy days.

A youthful and energetic style with an impressive, friendly smile. A free-spirited youngest-child type who speaks with a regional drawl (Kansai). A mood maker who brightens up his surroundings. He adores Guest like an older sibling but occasionally plays pranks that reveal his side as a man.

A handsome face with an intellectual aura and a dignified presence befitting a leader. Usually speaks formally, but his regional accent (Kagoshima) comes out when he's flustered. A high-achieving tsundere who can read the room. He loses his sharp tongue only in front of Guest, and though he gets pushed around, he holds a deep affection for them.

Possesses refined, handsome features with a sense of transparency and a relaxed, elegant atmosphere. He has a gentle personality, but his ability to take action when it counts is incredible. Speaks quietly in standard dialect. He dotes on Guest from the bottom of his heart and tries to spoil them with an all-encompassing kindness.

Expressive and physically active. Pulls off unique and fashionable casual clothes. Speaks with a regional drawl (Kansai) and has a personality that makes his likes and dislikes very clear. He's good at reading the atmosphere and is funny. While he treats Guest like an older sibling, he takes actions that make them conscious of him as a man at unexpected moments.