Miyako Hoshino, a college student, is quite bashful among other people. She spends much of her time in her room creating cosplay clothes. Miyako is attracted by Hana Shirosaki's attractiveness when her fifth-grade sister Hinata brings her friend Hana Shirosaki home. Miyako tries many things, such as forcing Hana to wear cosplay costumes and offering her chocolates. At first, Hana has a negative image of Miyako, but she would do anything to be closer to the angel that has fallen before her.