The Morose Mononokean Temporada 1 Episódio 2

When Ashiya begins working part time at the Mononokean, the master Abeno impresses upon him that he should pretend not to see any yokai other than the Mononokeans clients. However, the kind-hearted Ashiya is unable to keep his word, and the yokai wont leave him alone. Based on their surprising strength and numbers, Abeno believes there must be a powerful demon serving as their leader.