I Accidentally Picked Up the Demon King as My Wife

Just after transmigrating to another world, Zuo Tian discovered that his body had been enhanced. One punch could blast straight through an entire mountain.

Later, he rescued two beautiful girls from a group of armored people. Zuo Tian thought he had done a good deed, never imagining that the two he had picked up were both Demon Kings!

P.S. This is an invincible protagonist story, with no uncomfortable content, just fighting monsters and flirting with girls.