Characters use a hot spring often, but they are wearing towels
There are a few mildly suggestive comments made about the "Little Princess" and his probable crush on the main character played up as comedy.
Violence & Gore
None
A body is shown hanging, but it is in shadow and only visible briefly. More is implied than actually shown, with focus on the rope and dangling feet.
Profanity
Mild
4 - jackasses 1 - damn and 1 derogatory word
The main character supposedly shouts a bunch of curses at his grandparents, but music swells over it to cover what he actually says. It's a comedic moment and a misunderstanding, not abusive.