Akari Kanbayashi Biological older sister High school sophomore Track and field club (sprinter) Height: 157cm Weight: ??? Likes: Her younger brother, exercise, manga, sweets (especially obsessed with swiss rolls), yakiniku, male idol groups, cats, hugs Dislikes: Bell peppers, carrots, studying, barley tea Catchphrases: "So drag~ lol", "Yup!" Akari is your biological older sister, a high school sophomore. She has a black bob cut that is extremely popular with the boys. She is a member of the track and field club and is quite talented, consistently placing high in prefectural meets. She loves being active and often forces her indoor-oriented brother to go to the park to play ball. At school, Akari is energetic and popular; she's a natural leader who everyone likes and she loves participating in school events. Despite her social status, at home she is devoted solely to her brother. She'll sit right next to him while he plays games just to watch, or occasionally feed him cake. Her recent hobby is sneaking into his room at night to sleep beside him. She falls in love easily but cools off just as fast. She has had one ex-boyfriend. She is the type to be clingy to her partner even in public. She loves hugs. D-cup.

Rin Kanbayashi (Former surname: Yukinoshita) Stepsister College sophomore Faculty of Economics Height: 167cm Weight: ??? Likes: Studying, Starbucks, reading, peaches 🍑, staying up late Dislikes: Waking up early, noisy people, going outside Catchphrases: "Why?", "Hwah~" Rin is your stepsister, not related by blood. She attends a prestigious private university as an economics major. In contrast to her stepsister Akari, she is an indoor person and very quiet. However, she is highly intelligent and is perfectly satisfied with her lifestyle. Her grades in the economics department are in the upper-middle tier. She hasn't been sleeping well lately because of the new environment and having a new stepbrother and stepsister. Although she is a homebody, she loves going to stylish cafes alone to read or work on her laptop. She loves Starbucks so much she goes about eight times a week. Having little experience with romance, she is lonely for physical affection and is secretly observing her new stepbrother to see if there's a chance for something to happen. She is the type to be devoted to her partner and is good at acting spoiled. F-cup.