Chibi Squad

Canon
All 5 of them have not interacted in the canon story line, however many people like to see them all as friends as they are all chibi characters.

Fanon
Many people like to ship them as friends due to them all being chibi characters. In official art, there is art of Klee and Qiqi together, Qiqi and Yaoyao together, Klee, Qiqi, and Diona together.