That year, someone snuck their way into Sang Zhi’s heart. Falling in love with her brother’s friend, Duan Jiaxu. This elder brother has beautiful peach eyes and casually calling her a "kid". The surprise when they first met made Sang Zhi want to slowly get closer. But the 7-year-old age difference seemed to be an insurmountable gap for them. Not knowing when it started, the secret love buried in her heart gradually sprouted, and slowly, it spread into his heart too...