Takatou Iori

Step sister of the protagonist.

She has natural beauty that draws people's attention, and a sociable and innocent personality. However, she herself says that her cheerful personality is the flip side of an innate feeling of loneliness.

She enjoys having a step brother and the family that she's always wanted. At the same time, she's a bad girl who has her step brother wrapped around her finger with her devilish charm.