The System Is Toxic! It Insists I Ship with My Rival

[Two Male Leads / System / Quick Transmigration] Mo Bai and Mu Chen are the entertainment industry's two biggest rivals. They can't stand each other, but get cast in the same drama featuring two male leads. Before either can become a top-tier star, they both accidentally get trapped in the [Love Loop] System and are forced onto a grueling mission to win hearts, with plenty of shameless public displays of affection along the way. Since it's a romance System, the main mission is obviously to fall in love (not really). The System tells them they can only unlock the next world by completing their mission in the current one... The emotionless voice prompts drive them crazy time and again: Current mission progress: 1% complete.

Mo Bai: Cooperate a little. If we don't play up our CP, we're finished!

Mu Chen: ...I'm straight.

Mo Bai: Who isn't? I'm straight too!!!

Quick transmigration through multiple worlds, with every System bug turning into a helping hand. Sweetness level: one hundred thousand percent.