This feels like seconds before Izayas head will be pushed through the bed into the floor
Probably Shizuo would be restrained by the presence of the girls.
Also, he doesn't want to just kill Izaya. He wants Izaya to know he is being thoroughly defeated no matter how desperately he struggles. Offing him in his sleep wouldn't do that.
Also, he doesn't want to just kill Izaya. He wants Izaya to know he is being thoroughly defeated no matter how desperately he struggles. Offing him in his sleep wouldn't do that.