Here is a drawing that I did cuz I have a lot of free time to waste so here it goes:

muahahahah!

but killy talks too much

I think the real killy in the manga really talks much, but just when he's alone , y'know why? cuz he takes long time to think about what the other ppl say. And when he's with Cibo she's allways talking and he maybe thinks she's boring cuz she never talks about the theme's he likes, like... sports or something (lol) and he just ignore her... or maybe when they're toghether he's thinking how cute she is and cant say anything cuz she's the type that never shut up (these are my theories)