Finish this plsss

Basically:
A teenager who survived a plane crash and was forced to become a murderer (or mercenary if you want). He finds his remaining family years later and tries to live a normal life. Of course the author is like 'no way jose' or we will not have this manhwa in this list if it was just wholesome-ness

Omniscient Reader's Viewpoint knock-off, but it's pretty cool

I'm tired of making reviews, so, dude almost dies - future generation child went back in time to give his ancestor a cheat - basically helps in EVERYTHING