Just read this manga series called THE GIRL BY THE SEA. It's in the beginning yet, only 10 chapters, but it's well worth a look. Drama mixed with erotica/sex/teenage angst and very well drawn. Like, VERY WELL indeed. And definitely for adults.
Afraid not, but I'll be giving this one a miss. I really don't need Erotica and Teenage going together. It's more trouble than it's worth, overall.
For clarity, this isn't me being judgemental. There's a lot of good stories to be told about teenagers and the stupid shit they get up to due to crazily surging hormones.