The heroine,Akari Uzuki,can't forget her first love,Shirou,a childhood friend she's liked since elementary school. Shirou is a macho bad boy who grew a lot during junior high and high school getting cooler and cooler,until he ended up on the girls' radar. Unlike him,Akari remained a plain,shy girl. She concluded Shirou and her are not meant to be,and steadily began to avoid him. However,one day Shirou baffles Akari by proposing her to be fake lovers. In order to catch the rabbit,the beast devises the sweetest trap.