if nerd revive yamazaki and like katou and yamazaky promise that both of them will live together with her son and ayumu in tokyo, if they teleport to the mission will they be in different team (beacuse yamazaki is from osaka right?) and do the different mission, or will they go together in tokyo group?

Nah, not realy. Izumi and Nishi discussed many chapters ago about emigrating in other Lands like Germany.

So i doubt, if a Osakan Ganzer lives in Tokyo, Gantz will teleport him in the Tokyo room.

hmmm but we never saw anybody in tokyo team teleport into the room from outside tokyo, right?

Nah, we didn`t....