There is nothing graphic in chobits, and so the sexual references will most likely not even be noticed by younger children.

Hideki quite frequently has sexual fantasies/dreams about girls he knows.

An erection joke is made.

References to porn are occasionally made.

Chii's "on" switch is her crotch.

Chii is occasionally seen partly naked/completely naked, although there is always objects on the screen to block it.

When Hideki and Shinbo are at an indoor hot spring, Hideki stands up out of the tub naked, although you can't see his genitals.

On two occasions, people try to touch Chii's private area.

Chii tells Hideki that she loves him and that he can 'touch her'.

Hideki sometimes gets nosebleeds, very brief although a bit bloody.

Hideki kicks another man in the face and then threatens to punch him, he continues to act aggressively towards the man for the rest of the episode.

None

Hideki and his teacher buy lots of beer and get drunk in one episode.

In the restaurant, people are seen being served beer and drinking it.

Chii is kidnapped on two occasions.

The last two episodes are very upsetting.