Wow, Akira really didn't have much screen time, I really thought there would be more to it than that. Anyways kind of ironic that those two random people are now members of Gantz's team ... wonder what they will do.
As the post above pointed out, tat doesn't necessarily mean he won't appear again. It's also cool to focus on other characters for a change and to see how the group is going to change.
While it definitely sucks that Kurono died, it was still pretty funny to see the two vampires realize what they got themselves into after it was pointed out that killing more of them would ultimately be pointless. They better bring Kei back later on though!