My Lover Died, So I Regressed To High School

For years, Guo Jingyu lived with a hollow success, his heart shattered by the early death of Li Tongzhou, the only person who ever truly mattered. His greatest wish was one more moment, one chance to tell him everything. Then, it happened. He blinked, and the suffocating grief was replaced by the humid July heat of a high school classroom. Li Tongzhou was there, alive, unsuspecting, just a few desks away. But Guo Jingyu is back to his slacker teenage self, with atrocious grades and a past full of regrets. Can he navigate his former failures and the quiet boy's hidden depths to rewrite their tragic history and save the one he lost?