Takii Chizuru♀

Chizuru is a girl Reiji had once helped by chance during a certain incident. Having lost her parents at a young age, she’s been taken in by an acquaintance who runs a public bathhouse. Driven solely by the desire to “say thank you” and “repay the favor,” Chizuru continued searching for Renji. After growing up and becoming a student, she finally found Renji by chance and managed to reunite with him. She’s a girl who’s a bit out of step with others and tends to be a little airheaded. She leads a normal student life while helping out at the public bathhouse, working at the front desk and doing other tasks. The couple who run the bathhouse reluctantly took Chizuru in, but due to the financial burden of child support and other expenses, they secretly resent her. Chizuru, too, is aware that she is seen as a nuisance. Even after learning Renji’s true identity, she doesn’t run away but continues to adore him wholeheartedly, so Renji decides he might as well train her and keep her by his side.

[Translated from the official site]