Why Is Something Wrong with the Archenemy Again?

[Two male protagonists + quick travel + main attack + rival turned lover + sweet pet] Bo Molin repeatedly told a certain enemy that he would not be able to live without a meal, but he always failed to do so. Because he did not fulfill the oath he discovered, he was punished by God, bound to the system, and went to another world to save his enemy. Bo Molin: No help! System: Then you will die too Bo Molin: It's not impossible to save him. The mortal enemy became the cowardly and infatuated lover of the next door neighbor, and he was always peeking at her... Bo Mo Lin tightly covered his collar, no, he was very virtuous... Later, it was the little one who was not loved