The creator of Hyouka and a crazy lonely scientist. He looks kind of like a monkey and because of it people made fun of him and never treated him like a human.  He is very sensitive to being treated like a monkey and only wants to be recognized as human.  He eventually settled on a flying island and tried to make an artificial human that would obey his every command but all his experiments ended up as monkeys.  The monkeys, who regarded Inuhiko as their God and King, knew he was lonely and kidnapped Yuuka so he could have a human friend.  In the end, he realized the monkeys' feelings and accepted the fact that he was fine as a monkey before dying when his island crashed.

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.

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Inuhiko Saruwatari