*wipes the dust off the topic and drags it up front again*
Well, I'm still considering about the cosplay so far. But I am considering. I think Nezumi would be fun, and probably rather comfortable to wear for a con, especially if I would use my own hair. He doesn't have any crazy volume or strands that are defying gravity in the worst possible ways. I'd also rather take the manga approach where his hair is black, meaning I can do with black dye. I'd love to do that with real hair, because it's really hard to get a tight and high ponytail good looking on a wig.
Then I'm kind of considering Karan, because how often do you get to see side characters? Also I'm not that young anymore... so I could try the Mum approach. *chuckles*
I did a not very serious try of putting my hair up today and well:

By next year they'd be long enough to wrap a part around the tie and make the whole sticking out part a little shorter.
The one thing I have no idea yet is what to do with the make-up. Although I assume it will be less is more, for either Nezumi or Karan.