Cursed, Invisible Boy

Roberto was just a normal seventeen-year-old kid until he met Angel, whom he thought was the girl of his dreams. The very first time she called him, he went to her, and the minute he touched her, he simply vanished! Right in front of his best friend. Then, for the next two years, he would vanish ... in the classroom, in the living room, right in the middle of his family. He would just disappear.

And he used that power ... until he realized that it was something evil. But then it was too late, he had consented and he was now under its spell.