I had to share this quote because this is one of the saddest lines in the game series. You wouldn’t think so just looking at the last line, but when you consider that all of Roxas’s life has been this one summer vacation, at least to his memory, it means that he’s saying that his life is over but that he’ll let Sora take him back. Remember that Roxas is a Nobody and so holds Sora’s memories but not his heart. They became separated when Sora used the Dark Keyblade Ansem had forged to release Kairi’s heart (inadvertently turning himself into a Heartless; hey remember how Nobodies are formed, when people with strong hearts become Heartless? Wow, how convenient!).
Roxas understands, in this last scene, that he must return to Sora and give up his happy life in Twilight Town. The way the line is delivered, too, is emotionally charged and brilliant. It’s a poor-quality video, but here: