There are some scenes of characters bathing, but bubbles cover up most of the body so it's pretty mild.

In one scene, a girl leans very close to a boy and he gets flustered, thinking she's about to kiss him.

Occasional damns here and there.

Scorches (large amounts of coal moving with ill intent) may appear frightening to younger viewers.

Episodes 5-10 can be frightening.

Bizarre concepts delivered through an oddly sinister context.