>>5126434Each of those except maybe Kana and Rena work.
Nabi and Nacho are good friends
Kogane and Nanami have a similar personality, although Nanami seems a little more sleepy while Kogane is spunky
Uto and Luto are friends through twitter and talked many times to each other
SameAme
I exclude Kana since she's autistic and hates collabing, which is also some case with Rena who is somewhat autistic as well which still makes them a pair if we really want to force it. It really is the universal laws that a Nabi and Nacho is to be together with one another.
