There is zero male nudity, but some female nudity in showers and baths.

Pretty much shower/bath scenes. It's an easy skip though.

Some innuendo throughout the series. Nothing too bad.

A female character is seen coming out of the bath, breasts unobscured, but little to no detail is shown

In the first episode, a yokai dies a very gross death. Not too gorey but essentially he explodes a little and his flesh melts and it's more gross than anything.