On the surface, Miyako Hoshino (voiced by Reina Ueda) seems to be just an ordinary female college student, but in fact she has social barriers and cannot interact with people normally, so she often stays at home, making gorgeous Cosplay costumes alone. Hoshino Hinata (voiced by Rika Naga) is Miyako's younger sister. Unlike her sister's gloomy personality, Hinata is very cheerful and talkative, and deeply loves her sister. One day, Hinata brought her good friend Shirasaki Hana (voiced by Yuya Kuro) to her home as a guest. The moment Miyako saw Xiaohua, she was deeply fascinated by her. However, Miyako's personality made it impossible for her to make friends with Xiaohua frankly. In order to become someone who can match Xiaohua, Miyako began to work hard. As time went by, the distance between Miyako and Xiaohua gradually narrowed.