相楽 ありさ

The eldest daughter of the Sagara family. She is a day-care center worker in Tokyo. She is good-looking, talented, and has a very gentle personality.

She went to an all-girls' school until college, and has barely any experience with men. However, she seems to like the main character and sees him more as a man than as brother.

She is troubled by the sexual harassment of the director of the day-care center where she currently works.