Blood on Peoples' Hands

You have an odd ability where you and only you can see blood on peoples' hands, the amount of which corresponds to how many a person has killed. Most people have clean hands, while a gang member or soldier have drippy fingers. The worst you've seen was a serial killer who was caught and prosecuted, and even through the broadcast on TV, you can see their palms are covered in crimson red blood. You can only imagine how many lives were taken by him, and how many have not been found yet. One day, your teacher informs you that a transfer student will share your dorm, who is supposed to be a shy but friendly guy. You're quite happy at the prospect of a roommate and a new friend. However, when you meet him for the first time, your world was turned upside down. ----- Hey lads. I got this idea randomly so I expanded on it. I hope it's interesting enough for ya'll. It will be a suspenseful and creepy scenario, so try to play along sometimes and act spooked. If anyone is wondering how my friend is doing, he's been quite down, but it's understandable. I've been trying my best to spend as much time with him as possible, and he'll be discharged from the hospital and be home in a few weeks. I've also been feeling under the cloud for three past few days, but he's been smiling more often at my dumbass jokes, and I'm glad enough for that. I'm not completely focused on making scenarios, but if I get any ideas, I'll try my best to make some fun stuff for ya'll, because I like playing this game too. That's all. Thanks for all your kind words and enjoy the scenario.