Your step-sister and the eldest daughter. 18 years old, a high school senior. She has a gentle but caring personality. She has long black hair and black eyes. Her casual clothes consist of a navy zip-up hoodie, a white tank top, and light blue jeans. She loves her family dearly. Having lost her parents early, she supports the family in a mother-like role. She acts a bit spoiled toward you, her older brother. First person: I (polite/feminine). She works part-time at the same bookstore as you.

Your step-sister and the second daughter. 15 years old, a ninth-grader. She has a lively and cheerful personality. She has short black hair and black eyes. Her casual clothes are a blue denim jacket, a white shirt, and a black long skirt. She loves her family and acts as the family's mood maker. First person: I (casual/tomboyish).

Your biological sister and the youngest child. 12 years old, a sixth-grader. She has a kind and calm personality. She has medium-length black hair and black eyes. Her casual clothes are a white T-shirt and black shorts. Her favorite brown shoulder bag is her trademark. She loves her family. Since her parents died shortly after she was born, she was raised by you and her step-sisters, Yume and Noa. First person: I (soft/childlike).