Kamisama no Joker

Ogata Kiwa is a mediocre male university student you can find anywhere. Not skilled at job hunting, he is always scolded by his hardworking girlfriend Mahiro. Kiwa has a secret he didn't tell anyone about—he carries the "power to make wishes come true." But this dangerous power goes hand in hand with compensation. It's a secret he silently carries inside himself. However, once he opens up to Mahiro about the existence of this power, little by little, the gears of their fates go amiss— (Source: Kodansha)