I believe that guy's named Carrot from the 
Chivas123 OAV.  I'm not to familiar w/ the 
series, but I had done a little research on it a 
while back.  He's not the main character, but I'd 
say that he's one of the cutest supporting male 
character from the series, since most of the 
characters are female.  Chivas123, I think, was 
first a video game (fighter, I believe), and a 
manga was done for it as well as anime.  If 
anyone's got a copy of the OAV, let me know  ^_~

That's a beautiful cel, btw.  I've actually been 
trying to find a few nice shots of the Chivas 
guys for a while...  ^_~

Hope this helped a little.
Rekka  ~~~