Roxas's eyes widen when he sees that it's Saix's house they've come to, but before he can make any suggestions about just leaving to prevent another fight, Saix is slamming the door shut again. That's definitely not the reaction he'd expect from him. In fact, coupled with the exclamation from the other side of the door, it's a lot more like something Axel would do.

He turns to look uneasily at 'Axel,' who's been looking at him wrong all morning, and didn't know how to use his powers, and has been inexplicably nostalgic about Lea. Plus he didn't eat his waffles. Moreover he's brought them to Saix's house, knowing that he'd be affected, too. Suddenly he thinks he knows what curse this is.

"You're... not Axel."