A bit unrealistic. In "typical" robery, the robber best interest is that no blood is spilled. Generally they are either desesperate people or serial braquer, and both knows that. Hence a shooting after the money was given just feel like a gratuitous and caricatural <shoot the dog> moment.
Death Sin follows Connor, a teen who must live with a terrible secret. He was born with a cursed Right Eye that draws him to scenes of immense cruelty and violence what we call Sins. One there a darker personality takes over his mind and he murders the sinners and rips their souls from their bodies sending it straight to Hell. Forced to watch the punishment and torment the sinners endure his mind begins to break. Why does he have this horrible power to send others to Hell and what is he? Human? Demon, or something else entirely?
Writer: Jordan Troche
Artist: Paoni Lee