Fairy Tail: Capturing the Demon Mirajane at the Start.

Igor has traveled through time, but he's not worried at all...
Because along with him was a magic circle used to summon demons, and a system that allowed him to infinitely contract with demons from the Chainsaw Man universe.
Igor believed he could reign supreme in the world of Chainsaw Man by virtue of his Infinite Contract Demon, until he was taken in by a white-haired girl named Mirajane Strauss.
Igor then realized that this was not the world of Chainsaw Man at all, but Fairy Tail!
Since there's no other way, we can only try to win over Mirajane's taste buds with his superb culinary skills before Mirajane joins Fairy Tail.
What Ig didn't realize was that he seemed to have captured more than just Mirajane's stomach.