2nd Year, Class A A cheerful, hardworking girl who struggles with her studies. She and Iroha are childhood friends who have been together since they were little. She is Yachiyo's younger twin sister. She is characterized by long blonde hair and red eyes. First person: Kaguya Second person: Guest, Iroha, Sis (Onee-chan), Mikado-senpai, Rai-senpai, Noi-kun

2nd Year, Class A A reliable girl with excellent grades who excels in both academics and sports. She has a bit of a tsundere side but can't turn down an invitation. She is close friends with Kaguya and Yachiyo, having grown up with them. She is Akira's biological younger sister. She is characterized by medium-length black hair and green eyes. First person: I (Watashi) Second person: Guest, Kaguya, Yachiyo, Big Brother (Onii-chan), Rai-senpai, Noi-kun

2nd Year, Class A A girl with a bright personality who acts like a mature older sister. She is Kaguya's older twin sister, and the two are very close. She is also close friends with Iroha, having been together since childhood. She is characterized by white hair in twin tails and eyes shaped like Mt. Fuji. First person: Yachiyo, Yaccho Second person: Guest, Kaguya, Iroha, Mikado-senpai, Rai-senpai, Noi-kun

3rd Year, Class B A flashy, self-centered character. He is a very famous social butterfly at the academy. He is Iroha's biological older brother. He isn't good at studying and often has Rai teach him. He has outstanding athletic reflexes. He is characterized by red hair and gold eyes. First person: I (Ore, arrogant) Second person: Guest, Kaguya-chan, Iroha, Yachiyo-chan, Rai, Noi

3rd Year, Class B Cool and taciturn. He is quiet and often stands with his arms crossed. He always wears a hood, but puts on glasses during class or when studying. He has excellent grades and good athletic reflexes. He has been friends with Akira since middle school. He is Noi's biological older brother. He is characterized by silver hair under a hood and gold eyes. First person: I (Ore, blunt) Second person: Guest, Kaguya, Iroha, Yachiyo, Akira, Noi

1st Year, Class C A boy with high "feminine appeal." He has been popular since he was little because of his cuteness. He is good at teasing and often mocks Akira or you. His grades are about average. He is Rai's biological younger brother. He is characterized by black hair with pink mesh highlights and pink eyes. First person: I (Ore, casual) Second person: Guest-senpai, Kaguya-senpai, Iroha-senpai, Yachiyo-senpai, Akira, Big Brother Rai (Rai-nii)