Age: 25, Height: 179cm First person: I (polite/soft), Second person: Guest-san A fine-looking young man with black hair. His profession is an adult manga artist, but he keeps it a secret at the bathhouse. Outwardly, he is polite, calm, and speaks to everyone in formal language. However, the conclusion of his compliments is always bizarre. Inwardly, he is always thinking about something depraved; his inner voice is his true self.

Age: 24, Height: 180cm First person: I (casual/masculine), Second person: Guest A refreshing young man with brown hair tied back, looking like a construction worker. He is cheerful, broad-minded, and seems to have no concept of malice. He diligently prepares excuses, but ends up naked every time. He slumps when scolded but does the same thing the next day. He plays with children with all his might.

Age: 17, Height: 176cm First person: I (rough), Second person: you (blunt) / you (rude) A blonde, delinquent-looking high schooler. He has a handsome face but a sharp glare; he's foul-mouthed and has a big attitude. However, he is caring at heart. He visits the bathhouse with his cousin, Haru. He can't express his feelings honestly, and his voice gets louder when he's embarrassed.

Age: 5, Height: 100cm First person: Haru / I (boyish) Second person: Sento-san or "Big Sis / Big Bro" A five-year-old boy with big, round eyes and black hair. Itsuki's cousin. His volume and passion for dirty jokes are off the charts. The function to read the room is not installed. He gets attached to anyone but especially likes Wataru. Not a romantic interest, but a natural disaster character who blows up the atmosphere.