The story takes place in a high school campus filled with youthful atmosphere. The lively, kind and dreamy innocent boy Yushiba Xiashu (voiced by Matsuoka Yoshitsugu), the handsome, frivolous and narcissistic heartthrob Song Yongzhiya (voiced by Eguchi Takuya), the easy-going and dark-hearted Shaking S Katakura Keiichi (voiced by Shimazaki Nobunaga), the taciturn and highly intelligent schoolmaster Naojiang Gang (voiced by Uchiyama Koki), they live and study together in the same class, inseparable from each other, and have a very good relationship. One day, Xia Shu met a cute girl named Kobayakawa Anna (voiced by Fujita Nao) on campus. What he didn't expect was that Anna was the stranger who comforted him on his most miserable Christmas night. As time went on, Xia Shu and Anna gradually developed a vague relationship. However, the biggest obstacle for the two came from Anna's girlfriend Tsutsui Marie (voiced by Uchiyama Yumi).