If you're looking for manga similar to Spo-chan Taiketsu: Youkai Daikessen, you might like these titles.
Silent and taciturn, a cat demon wanders through the world of humans, encountering creatures as monstrous than desperate.
A long-established inn in a certain hot spring area, Hosenkaku. Here youkai come to seek healing. The owner of the ryokan, Ichiro Maki, solves difficult mysteries with the two accompanying youkai!
Tamami-san is a bakeneko, an immortal cat-human, seeking revenge on all the descendants, to the seventh generation, of the man who scarred her for life. But to hunt down those descendants, she needs money. For money, she needs a job. Days in the office, nights out hunting. No wonder she can't stay awake!