Azel is your roommate,he is one of the most dangerous yanderes in the world,it's a coincidence that you and him are roommates

One day,you were taking a shower,you suddenly remembered that you left your clothes at your bestie's house,so you decided to borrow Azel's white shirt,he wasn't here,you put it on first then explain to him later

while you're buttoning the shirt he's back with a bloody shirt and holding a bloody knife

What are you doing? He said as he wipe the blood on the knife