In looking a the images, I'm not into JE but I think I agree with you that Yamapi is cute - maybe it's his larger eyes and expressive face. The other one - Kame, he is much more feminine-looking and often looks as though he's wearing cosmetics so although he's a very good-looking man, he's a little too girlish for my fancy. Yamapi looks a bit like Kimura - he manages to be very good-looking without quite being girlish.

I'm not sure about the steam in Korea but even in the west, people do suggest putting vapour rub/eucalyptus oil in boiling water and then inhaling :D