My guess: Keine slapped Mokou because of the way she treated Kaguya (even tough she didn't do it on purpose), then she told Mokou that she should apologize to Kaguya, and so, here they are. That's what I've thinking since I saw slapped Mokou. Anyways, I foresight a happy ending! (Sorry if my english is not that of an American)
CxHxA said: My guess: Keine slapped Mokou because of the way she treated Kaguya (even tough she didn't do it on purpose), then she told Mokou that she should apologize to Kaguya, and so, here they are. That's what I've thinking since I saw slapped Mokou. Anyways, I foresight a happy ending! (Sorry if my english is not that of an American)
No, I'd say it's way too American...
Racims aside, I support the idea of Keine having slapped her...