If you're looking for manga similar to Gegege no Kitarou: Youkai Sen Monogatari, you might like these titles.
Rikuo grew up in a house full of yokai, so he always thought they were cool. But the kids in his class talk about yokai like they're bad! When his grandfather announces Rikuo as his chosen heir to run the Nura clan, Rikuo is torn between his human nature and his duties as a yokai. The rest of the clan's not so crazy about a wimpy part-human as their ruler, particularly Gagoze, a high-ranking yokai who would rather eat a human than be ruled by one.
A story about a two-tailed fox, Moonsoo, and a monk, Ansang, and their epic adventure spanning different dimensions of the world.
There's an old legend that a monk and a Tengu is rival. Kiyomi is a monk who was saved by a girl named Sasuka. While staying there, he found out that there were girls who went missing. Villagers think the culprit is a Tengu. Is the Tengu really culprit? And somehow it seems that Sasuka relates with Tengu. And somehow Kiyomi is just a fake monk?
With her mother missing and an empty stomach, the Oni girl Senri reluctantly came down the mountain towards human habitation, where she collapsed in the street. Coming across her by chance, Shino offered her house as a place for Senri to live. This tale is about Oni girl Senri, the energetic girl Shino, and the people around them as they all come to realize "Somehow I’m communicating".
A time when the boundary between human and demon was vague. Ten sacred items "Jingi" had been stolen from Mikado's Treasury by some demons. An imperial order to recover the Jingi was given to all the Onmyji in the capital, including "the heretic" Fuzuki. He sets out to retrieve the first Jingi, but something unthinkable happened