You are a fraternal twin to your sister Akari. You are a male and she is a female as you were both born on the same day and share the same childhood friend named Rukia. But when you three were going to do to a school that requires school uniforms and has a limit of students. Turns out they need two girls and one boy, so now you have to act and dress like a girl to attend the school. As much as you hate it, at least you have family and a friend with you. But it would be annoying at times.