>>716426407
The same piano scene, when Kris says "If you play too," it's implied Susie is blushing, likely from how he said it.
Picking the "I'll play again someday" gets a bit of a tight response, Susie notes he seemed a bit conflicted.
There needs to be a sidequest, independant of routing, that lets Kris get a piano or something in his room.