Comments of chapter undefined of I Became The Strongest In The Multiverse

This is just massively convoluted...so they killed him, but not actually because he gets send outside after death (and will be able to identify them)? They don't wann find the girl because it's a waste (she wouldn't be able to "log out" I guess) even though she should be running in the same direction, to the base? They don't use the giant mek because...some reason that wasn't explaint yet I guess. Maybe I'm just to early in the story to full understand all this stuff.