Facing the new high school life that is about to begin, the lively and cheerful girl Bao Deng Xin Ai (voiced by Sakura Ayane) is full of longing and joy. What kind of interesting stories will happen in the new city and new environment? Xin Ai accidentally lost her way while looking for a host family. By mistake, she came to a cute cafe called "Rabbit House", where Xin Ai met a mysterious girl named Xiangfeng Zhino (voiced by Minase Inori). This expressionless and cold girl will become a very important existence in Xin Ai's life. It turns out that this cafe is the boarding place that Xin Ai is looking for. Here, she will spend her three years of high school in the form of part-time work and part-time study. In the process, Xin Ai gradually discovered the unknown side of Zhino and began to understand the past and present of this coffee house.