Well the world of Gantz is changing, we have discovered that it is a worldwide event, also in the preview, we are shown another Gantz team.
With the recent demise of kurono and izumis return to gantz and then death it would appear that this premise and motivation no longer holds. It must be obvious to the gantzers by now that there is no definite way out of gantz and gantz related issues. Obviously there motivation now is to bring kurono back to life - but once that happnes what next? what will drive the team to continue fighting gantz missions and carrying on through the living hell that is gantz?