In the opening, a very brief scene reveals a girl and a boy circling across the screen naked. Not detailed nor implying anything sexual at all.
A girl is seen putting on a shirt in one episode. For a brief second, she is seen shirtless. (Again it's brief).
Show about friends and classical music. Nothing too sexual.
In an episode, the characters go to see Kaori in the hospital, they walk in on her having a spongebath, however, nothing explict except her bare back is shown, but Tsubaki kicks Kousei and Watari in the face and calls them both perverts. Nothing sexual; just playful.
A girl is shown wearing a boy's tshirt in his house which makes a girl next door Believe they did it. When in reality, the young boy was just providing her Hospitality. Nothing explicit or sexual shown and Is meant For laughs.
Some characters wear skirts but is not meant to show or be sexual. Very infrequent close Ups while not revealing anything hidden under the skirt.
A teen girl accuses a teen boy of taking a picture of her and calls him a pervert, when in reality he is not.
The show revolves around middle school students. Minimal nudity.