Also, not that I don't like Gray (he's definitely good looking and I'm already looking forward to his route), but what happened with the other guy?
Viewing post in Caine's release on March 25 comments
Gray, previously named Sam, was renamed due to similarities between another otome game who had similar named characters. Through polls, Gray was the most popular vote. He was going to get a rework, including a sprite redesign and overhaul of his storyline, much like how James had his route redesigned.
So Gray is just Sam in a new jacket.