A smart high school student falls in love with her English teacher after she receives one-on-one tutoring from him.
Hiyoko Hoshino (Aika Hirota) dreams of becoming a princess of the cookie world. One day, she is sucked into a donut hole and arrive in an animated world. She meets a girl named Tamako-chan and the creature Kokkubo. Hiyoko Hoshino visits the animation world everyday, but Tamako-chan dwells in Hiyoko Hoshino's body. Then, Tamako-chan enters this world and they begin to live in turns.
Former high school classmates, now adults, hold jealous thoughts, hidden intentions and lust for revenge. Graduates from a high school have held reunions since they graduated 10 years ago. The high school itself is located 2 hours from Tokyo by train and past reunions were held by different teams for different areas. An upcoming reunion is the first time where everyone will gather again.
