Wait, Kuroneko. Hear me out - I-
If you say any more, I'll die!
One other thing...where in the world is that hot spring? (And don't say Japan, I know that!) It's Japan, at the end of the summer vacation, which is the hottest and most humid time of the year even in the Touhoku region (I would know - I've been there in August), and they're all wearing long sleeves?! I guess the only possibility would be high up on a mountain somewhere...