Sixteen-year-old Shen Nian transferred to Mingde Middle School and sat next to Gu Huaizhi, the "son of the enemy". He thought it was a long revenge, but he didn't expect that the other party had already prepared fifteen years of looking back for him - two teenagers, a ginkgo tree, a box of tickets, a diary that had been annotated for twelve years, and a long-lasting two-way secret love that no one dared to speak first.
Concept: All secret loves are worthy of being echoed gently by time.