I'm a Big Shot in Every World

Lin Feng died, crushed beneath the wheels of a runaway truck.

Then, System: Hey, kid, want to be reborn? Lin Feng: No. System: ??? Whatever, contract confirmed. Lin Feng: ???

In short, Lin Feng was forcibly bound to a shady System and sent on missions to various worlds to keep the plot on track and deal with, no, help the male leads who cause trouble.

It's actually a sweet romance, with a one-on-one ending.

Theme: Sweet love.