Eh? Well it's relaxing, but I wouldn't say that's the only reason...

[Then again, don't ask him for a reason. If he had to put his finger on one, he'd probably have a pretty hard time, and what it comes down to is pretty much a mix of it being calming for him and a trait that he'd taken after his master, so! A very simple motivation for something like this. Ugh, but Yamato, that was probably the cutest smoke Horikawa has seen in his life, and the look on his face betrays as much. He even lets out a soft laugh to accompany it.]

Ahh, it's no problem Yasusada-kun! It wasn't so bad this time, huh.