My Feud with the Protagonist Is as Deep as the Sea [Quick Transmigration]

Since you've transmigrated into the protagonist's lowest point, why not seize the chance to get on his good side and become his underling? Then, once he makes it big, you can rise with him? Lu Rijiu: No. I want to mentor the protagonist. System: ...I feel like there's more to that, Host. Lu Rijiu: Tch. I want us to be lovers who fight each other every step of the way. While the protagonist is still young, why not take the opportunity to mentor him properly and force him to submit to your authority? Even if he later conquers the world and becomes invincible, the deep shadow you left in his heart will remain. And then, once the protagonist grows into a truly domineering winner in life... You won't be able to escape. System: Congratulations, Host. You took things too far. Lu Rijiu: ...I think I can still salvage this. He once commanded the world's awe, but fell from the clouds and whispered at your feet, “Please love me.” And then love blossomed from the dust. Top-focused, 1v1. A cold, aloof, universally adored top who puts on a high-and-mighty front, has a filthy mind, and constantly gets himself into trouble. Theme: