I Transmigrated into the Demon Lord, and My Disciple Is Actually a Traitor!

[Transmigration + Fantasy + Light Power Fantasy + One Female Lead + Sweet Romance]

While picking up discount coupons at a supermarket, Liang Tianmo is accidentally crushed into pieces by a hundred-ton truck. A mysterious System then transports him to a fantasy world, where he becomes its most powerful Demon Lord, though his original body died hundreds of years ago.

I may not have any cultivation, but I've got a System.

In that case, leave conquering the world and enjoying the good life to me.

Disciple: Master, I love you!

Protagonist: I love you too, my dear disciple.