My Mortal Enemy Says He Likes Me?

Why does he keep crying! [Two strong leads] [Two male leads] [Light System elements] All main characters are adults!! A dark, emotionally unstable bottom & a scheming, sly top who cries easily After a car accident, Xie Qing unexpectedly returns to his teenage years. At the same time, he learns that he is actually the villainous antagonist in a novel. He is harsh toward his family, rude to his classmates, and even tries to sabotage the relationship between the main couple. He is obsessed with pursuing the male lead. His antics include collecting bottles the male lead has drunk from and mixing their contents with water to drink, saving the male lead's eraser shavings for three years, and following him after school... He deliberately targets the male lead's love interest, who eventually takes revenge on him. His company goes bankrupt, and he ends up homeless. His character is terrible, and he makes enemies everywhere, until everyone turns against him. * As Xie Qing listens to a machine called System tell him the story of his life, he can only think that the person it's describing seems like a stranger. Is that me? System says its task is to help him successfully win over the male lead. But why does the male lead's love interest have the exact same name as his sworn enemy? * Yuan Liao has liked Xie Qing for a long time, but he has never had the chance to tell him. When he sees that familiar, spirited boy stride in once again, bathed in the morning sunlight, his heart pounds wildly. Because he knows that the boy has come back, too. * Xie Qing thought no one would care after he died. So why is his sworn enemy crying and saying... that he likes him?! A dark but emotionally stable bottom vs. a scheming, sly top who cries easily