Sena is a second-year student in Shimano Gakuen and also is the head of the School's Student Council, who is recommended by the former head. She is the official Idol of Shimano Gakuen whose popularity is comparable to that of Riko's. Sena has a liking for penguins and is obsessed with getting as many of those toys as possible. She is able to collect Gift from every male student in Shimano Gakuen who confesses his feelings to her, but she doesn't go out with any of those guys even once. In addition, this Gift to her is easily obtainable, but it doesn't make her happy even if she has that ability.