Kodomo no Jikan

The following content is terribly lewd. Those pure of heart, take heed.

You know, this manga really is good.

Joou-sama no Eshi

Slow down, friend. The following content is incredibly perverted.
This manga is 18+, not safe for work, and is really rather sexual.
Should you be pure of heart, avert thine eyes.

This manga is “about” many things, but this right here is probably my favorite aspect.