I'm looking for the source of a manga. It involved some dude working on some sort of maintenance job along side the owners daughter, and the girl had an obsession with wanting to see the guys dick.
In an early chapter, they're working on a playground and the two of them get stuck in a slide and the dude uses his boner to push her out, or something along those lines. It wasn't a hentai, I don't think. But it was pretty ecchi.