Himehibi: Princess Days

Aizaki Koi is enrolled at a normal high school when her grandfather makes an unusual request: transfer to his all-boys school as a one-student experiment, the goal being to convince the board of directors that co-education can work. She refuses at first. Eventually she agrees, becoming the only girl in a school that was not built with her in mind. Some people want the experiment to succeed. Others make that clear through threatening phone calls. A romance game set in a school that is still deciding what it wants to be.