Most episodes feature no fanservice or sexual material whatsoever.

Episode 10 features a brief scene in which a female character is upset about her breast size while trying on swimsuits. Another female character replies that she's lucky. We don't see anything sensitive in this scene other then a female character's stomach.

Some innocent references to romance/crushes.

Some mild slapstick violence. Ai frequently rams her foot into her brother's side/on his head when she's irritated. A female character is also hit a few times by her teacher. No long-lasting injuries.

One use of 'damn' in the official subtitles. Occasional use of mild slang language ('sucks', 'frickin').

Ai's grandmother is seen smoking every time she appears. (She doesn't appear in every episode.)

A very light-hearted show. Only very mild content concerns are present.