Meet Mu! / by Derrick Fields

Concept art by Sarah Gavagan

Mu is a clumsy, loud-mouth, yet kind-hearted individual that has been tasked with raising a dilapidated Naka Onsen. After spending some time away, he has returned to the village only to discover that their sensei (master/teacher) has gone missing. Mu must now set out restore the onsen to its former glory and continue fulfilling their sensei's mission-- heal the villagers and restore the balance between humans and yokai.

...but we have not seen yokai in many, many years.