Seinen Kodomo no Jikan by Watashiya Kaworu

[Josef]

Kodomo no Jikan
By: WATASHIYA Kaworu
Genre: Drama, Ecchi, Romance, School Life, Seinen, Slice of Life
Serialized In: Comic High!

Description:

Daisuke is a 23 year-old new schoolteacher. He ends up being put in charge of a 3rd grade elementary school class since the previous teacher quit, and in that class there's a girl who's quite a troublemaker--Rin Kokonoe. You could call her a masegaki (used to describe a kid that acts more like an adult in some ways), and she's also part tsundere (though more dere than tsun).

Source: Mangaupdates^^

 

[Mr.Aaron]

Re: Kodomo no Jikan

This manga is disgusting. Seriously. If you have a problem with elementary school teachers getting turned on by little girls, then this manga is not for you. You should probably put that in the op.