Ok. For first this is not "manhwa" per se.
This is something akin of "adaptation" of novel. (And one of good ones)
Similar to it are overgeared and solo leveling.
Oh gooood, can they stop writing MCs as a fucking useless weaklings?
It was literally shown that he knows who is "bad guy" in that room, nope he puts information clerk under the bus, making her help him.
CONFRONT HIM, YOU PUSSY!
Wait... roll back...
So Actual Lilia got killed by that rat. And this is Sasha.
But somehow this Sasha now thinks she is a Lilia and Sasha got killed?
Author forgot what he wrote or what?