[Kazu-kun]

Originally Posted by Guppy

Spoiler for beginning of volume 8:

...Kirito mentions that:

a) he uses his Search skill to set up an alert that will warn him if someone approaches him;
b) he only takes light naps when outside, to minimise the risk.

Asuna's Search skill isn't as high as Kirito's, and she fell soundly asleep (apparently for eight hours).

Thanks God they remove this sort of thing from the anime. It makes him look even more Gary Stu than he already is (and he's already pretty high in the Gary Stu scale )