ICly, Kanji'd likely need to be pushed into accepting one: he was just doing what had to be done, right? And as he got/will get an Element from that showdown, he's already got a reward.

However, he's never had the chance at one before: so if there are any pieces free, the Meowjesty (matches his Persona!) or Frootz Cat (...Pink. Fruit. Kitty.) would probably be his picks.