kigurumi - a form of cosplay that includes a mask that looks exactly like the anime character being portrayed
fuku = school uniform, often the sailor-suit type
Why not use a sweatdrop to show Man Moeko's embarrassment?

Piro speaks:
Actually, good question. Simple answer is that even tho we are now all used to such an abstract sybol from manga, i don't feel comfortable using it. I'd rather just let the expressions convey that feeling without using abstract symbols.
this is, of course, very difficult when someone is wearing a mask. Which was, of course, the challenge with this particualr comic. :P Body language is all you have, and i did what i could. Also, you can use framing, etc, to get that feel.
anyways, it's the kinda stuff i think about when doing these. :P