i say let everyone die, it's not like they didn't act like monsters themselves, and the worse is going to happen is that he's going to die sooner or later in this situation, it's gonna happen, literally the same thing that happened on 'sweet home' (shotgun boy is a prequel to sweet home) so...i think with that its enough to know where this is about to go if he were to let everyone die like everybody wants to, the story would end too early
AWWWW IM SO HAPPY FOR THEM I CANT WAIT TO SEE YECHAN FREAKING OUT IN THE NEXT CHAPTER HELPEFPWNPC