Zhuang Dunda (voiced by Suzuki Tatsuhisa) and Katagiri Otoko (voiced by Suwa Ayaka) are childhood sweethearts who wanted to grow up together. After growing up, the pure friendship between the two began to deteriorate slowly. In the end, they expressed their feelings to each other and became boyfriend and girlfriend. Zhuang Dunda's personality is very twisted and rough. He has an unhappy expression all day long. Any nice words coming out of his mouth seem to have thorns that make people uncomfortable. But in fact, he has a very kind heart. But no matter how cold and poisonous Zhuang Dunda is, Katagiri Otoko, who is deeply affected by it, still likes this big boy wholeheartedly. Although they are often tortured by insecurity, the two people who are in tune with each other can always successfully resolve misunderstandings. In the bright and tidy campus, the thorny love comedy between Zhuang Dunda and Katagiri Otoko is staged every day.