The Catalyst

"Alex: I don't speak with God. I'm not a damn angel, I'm not a great spirit, I'm not the angel of death, and I'm not Jesus. I'm....

Patricia and Allison: ...just an average kid'"

A set of stories about Alex, a high school senior who goes to Orleans with his family on spring break. Through the series, Alex grows up from an asocial wallflower to a mature young man.

The series is written by an author known as Crumbly Writer, and it can be found here. While it does not focus on sex, it is advertised on an erotic literature site, and thus is NSFW.

Contains examples of:

 * Brother-Sister Incest: Played straight, then averted. Whether it will stay that way is anyone's guess.
 * Cursed with Awesome: Alex and company can speak telepathically, to anyone who shares a connection to him, as well as being surrounded by a crowd of beautiful ladies. The downside?
 * Even the Guys Want Him: admitted he would if Alex asked.
 * Unwanted Harem: Alex may have wanted to be more popular with the girls, but he certainly never asked to be the center of these ladies' attention. To say nothing of Anh.