In an episode, a girl is wearing a maid dress
Mild innuendo. Will most likely go over kids heads.
Male characters are shown bathing in hot springs with nothing but towels covering them. In a couple of scenes, the towels are taken away/fall off in the water, nothing is ever seen though.
Female characters are shown in hot springs and later wearing nothing but towels. In a later scene, they hide a boy by sitting on him.
At one point, a girl (talking about money) says, "That's a lot of booty!" One of the boys says in response, "I beg your pardon?"