Onmyoji: the Evil Man's Husband Is Very Sinister

Ever since I met him, there has been a lot of evil happenings. What the hell is Onmyoji? He has proven it through practice: Can be so handsome as to be scumbag, You can play well, If you can catch the demon, Can win over girls... She was indifferent: If you can't use up all your magical power, go and succumb to the demons! He joked: Aren't I "succumbing" to you? When a serious monster meets a yuppie onmyoji, who can defeat whom?