Melt

Or alternatively: "Crona doesn't know how to handle the heat!"

This picture was inspired while wearing my Crona cosplay at a convention. I mean, seriously, he wears this black robe in NEVADA?! No wonder he stays in his dungeon all of the time...

And okay, I ship Maka x Crona. While on a date the two discover the limits of Crona's heat tolerance (or lack thereof) during a scorching summer day and hurriedly take shelter in an ice cream diner. Maka frantically fans the swordsman while Ragnarok (too parched to comfortably stay in Crona's sluggish bloodstream) oozes to puddle on the floor.

If you're not into the pairing you can pretend they're just friends or whatever.