Kaname Arisugawa

She's been helping the bathhouse for a long time. Despite being young, she is very mature and always gives good suggestions to [Nasa](https://anilist.co/character/130944/Nasa-Yuzaki) to help him out with his couple life. Like her mom, she really likes dirty jokes and apparently, she has no fear of cleaning the males' bath while Nasa is in there. She isn't shy and prefers a direct approach.