In one episode, a girl's older brother can be seen lounging on the side of the bathtub in the nude. Though private areas are (barely) covered, viewers do get a brief shot of his rear end. (Note: This is partially a cultural thing, as bathing related nudity is considered completely acceptable in Japan.) It's also later revealed that the same fellow has a secret porn stash, and his sister uses this information to blackmail him.

Brief reference to "porn books".

Some verbal fighting.

Emotional scenes, some of which may be intense.