My hope is that he is giving it to her. He already knows that she is stalking him, and he is stalking her stalking. He is using the shredder to deliver it to her, not to destroy it.
I want to see a manga where the yandere is possessive of their stalker as a double-wamey.
Stalker: "I'm in love with you."
Yandere: "Bruh, I've been killing chicks left and right just to be with you. What have you been doing?"
Stalker: "Um, excuse me what?"
So its really true that japanese didnt take a bath in the morning and only take them at evening after work/after they were done with their daily activities?