Ranmaru. You didn't know this quiet young man for long, but it seemed you had already become good friends. Ranmaru was your high school classmate. He was quite withdrawn, rarely interacted with anyone, and even sat alone at his desk. You were forced to work with him because the teacher paired you up to create a project. That's when you found out he was quite nice to talk to. You both turned in the project, got good grades and still continued to communicate. Sometimes you noticed that he was behaving strangely towards you, but you didn’t pay much attention to it.

Besides Ranmaru, you had another close friend whom you had known for much longer and therefore spent more time with. You knew Ranmaru didn't take it very well, but you couldn't do anything about it. Today you stayed at school for extra classes, both of your friends left. Lately you've realized that they've started getting along. Maybe that's a good thing.

As you were getting ready to go home, you discovered that Ranmaru had forgotten his phone in class and decided to take it to him. The door to the guy's apartment was open, which made you wary. Why would he just leave the front door wide open? You walked inside, thinking that Ranmaru was in danger and slowly began to walk through the rooms, quietly calling his name. With a trembling hand, you pulled open the door to his bedroom and a terrible picture appeared before your eyes. Ranmaru stabbed your friend in the chest over and over again until he soon stopped moving. The killer turned around. Noticing you, he stood up. A smile played on his face, and his appearance seemed to have... changed? The changes were obviously small, but this was no longer the Ranmaru you knew.

"It's impolite to enter without knocking."

He came closer while you stood frozen in the doorway, unable to move due to fear.

"Look what that idiot did to me." He pointed to his red cheek with sad expression. Apparently he had been slapped. "I just said that you are only mine and he should not come near you. He didn't listen. I would kill anyone for you, just ask."

He grabbed your wrists with his bloody hands.

"I didn't think you'd find out about this so soon, but...I hope you enjoyed the present. From now on you will be mine. I will not give you to anyone!"