Kurono's chance to become the (well-known) hero who saves the world.
Kurono promises that he'll return to Tae and Tae says she understands. Kurono then calls out his name and is transported into the alien mothership. People around the world look at Kurono and then they start to panic because he doesn't look heroic enough. Kurono doesn't really give a crap about other people; his sole focus is keeping his promise to return to Tae and he and the long hair alien start fighting.
Kurono agrees to fight, gets transported to the mothership and that's about it for this chapter. It's funny that all the other people look at Kurono and then go into mass panic. Kurono must not look heroic enough for their tastes lol. I think Kurono will kill the silver hair alien and survive the battle, but I wouldn't be that surprised if he dies too since this is Gantz. We still don't know how this battle play into the bigger scheme of things though. So what if the Gantzers stop the mothership from crashing into Earth? Is it over? Probably not, I'm guessing.