He didn't kill them, an assassin did. It doesn't say who hired the assassin.
Oops I had assumed when it said they were deemed useless it meant the ml got someone to kill them but it’s interesting if that’s not the case I still don’t like the ml tho
No, I believe the confusion is justified. The sentences with the words "assassinated" and "assassination" that were used is very much like how the word "executed" and "execution" would be used. (Apologies if that's confusing) It might be a translation/phrasing error.
The male leads judging the creepy guy like he didn’t kill his own child also idk how mc could ever even want a child with him knowing what he did