After Rebirth, the Girl I Had a Crush on in High School Is in Front of Me

Single female protagonist, sweet story, please beware of diabetes! Middle-aged Li Tianran accidentally reborn in high school and found that the treasure girl Xia Zimo who died in high school, whom he had a crush on, turned out to be his classmate. Li Tianran decided that he must save this girl and prevent her from dying! Moreover, the reborn Li Tianran accidentally obtained the system. With this system, Li Tianran completely changed his life... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.