Kidding aside, I actually sort of called this:

Quote Originally Posted by shinta|hikari View Post
I want Isla to be completely gone. Otherwise, everything the show built up to becomes pointless. It would be even better if the new Giftia that looks like Isla shows utter disregard of the dude, but he doesn't care either because he knows she's not the same person. He shouldn't shy away from making new bonds and keep being the nice guy that he is. That shows his growth as a person and as a spotter, giving meaning to Isla's life outside of just memories.
We didn't see what the new Giftia looked like, but that was even better. It further proved how Tsukasa matured as a person because of his romance with Isla.