Not quite sure if this qualifies for the Convenient Cirno pool, since she doesn't seem to be helping much.
Geeze.. I told you to bring something for provisions because we're sick!!Hey, Marisa... Reimu caught a cold?Reimu!! I heard you had a cold!!...huh!? The body-switch trick!?SneakWhat are you doing, you bastard!!!Ker-bamThis'll absolutely make the cold worse ...ThwopSlideTouhou Short: Calling on Someone Who is IllCoolFutonNoo!♥Are you all right!!?Hragh!!! A chance to get my own back!!!Yeah. 'Cause she's not stupid. Riffing on the Japanese axiom "Fools never catch colds."Sorry, sorry! I did bring something!Slide...Grkk!!!Well, I'd be thankful for some ice, but that's a little ...She's seriously a genius magical girl!!!I know what to do!! It's good to cool down at times like this, right?So she is an idiot...shiver shiverCoolFrrrpUm... although it is cool, it's also quite... COLD!!!Slide...Jump