Kyouran Kazoku Nikki

Midarezaki Ouka is used to having strange things happen to him -after all, he is the head of the Great Japanese Empire Paranormal Phenomena Bureau of Measures. But when he catches a small cat girl in the shopping district stealing apples, his whole life rearranges to fit a new operation... OPERATION COZY FAMILY. Thousands of years ago, Enka the God of Destruction, was killed. However, with a dying breath it claimed that its child would appear and destroy humanity. Now in futuristic Japan, all of the potential children of Enka have been found and placed into a haphazard family. Teika the lion, Gekka the jellyfish, Yuuka the oni, Ginka the cross-dressing mafia son, and Hyouka the bioweapon--along with their parents Ouka and Kyouka (the ruler of a demon underworld)--all live under one roof in a family frenzy.Thousands of years ago the God of destruction ,Enka, died saying thats its child would destroy the world.Thousands of years later the potential children of Enka are found (some human , some not) and take part in the Peaceful Family Operation in order to discover who the true child of Enka is and stop them from destroying the world by teaching them the importance of family love.