Not sure if I should put this here or in the Q & A thread but here goes....
Does Klein/Kline have any major role during and after the SAO arc and how important is he in general? I'm asking mainly out of curiosity as to whether or not there are ever going to be any other male protagonists.
While I'm on the topic, do the other members of Kirito's harem move on after seeing they have absolutely no chance against Asuna?