Y/n woke up the next morning and did her morning rituals. Y/n walked outdoors and felt like someone was watching her every move. Y/n ran fast to the library and read a few books to take her mind off of it. She was reading all of her all time favorite books, and she saw a familiar blue hedgehog waving at her outside. Y/n felted creeped out and walked farther away in the library so the blue hedgehog won't see her. And she sat next to someone and then calmed down for a while.
"Do you mind if I sit here?" Y/n said. The hedgehog just shook his head and continue to read.
"I'm y/n, who are you?" The hedgehog closed his book and turned around to face her.
"I'm Shadow the hedgehog..." He said in a harsh, grumpy tone.
"Talk about attitude.." Y/n mumbled to herself. "Do you wanna get some lunch with me?" Y/n asked. Trying to be more social to the male hedgehog.
Shadow sighed"I guess, why not join along." He was at her side and walked out. Sonic saw the whole thing behind the bookshelf and had fire in his eyes. He chuckled darkly and took out a knife...
"Don't worry my poor naive, sweet, and kind Y/n. You will be....MINE!!!" Then the librarian told him to be quiet or get out. He just got out of the library and stalked Shadow and y/n to make sure y/n was all right and was not going to be taken by Shadow. Sonics jealousy grew more inside of him, and he wanted y/n all to himself.
X X X
Later on, y/n and Shadow went to the movies and watched a really funny comedy movie. Shadow had to go to the bathroom, this was Sonics chance to murder his first victim. Shadow was done and he just had to wash his hands. Until, he got interrupted by a voice.
"Hello Shadow,lovely evening to watch a movie is it not," Sonic opened one of the bathroom stalls that he was in.
"Too bad I have to kill you.." Shadow just looked at him in a confused way. Sonic pulled out a knife and stabbed him fast. And dragged Shadows dead body into a burning building.
"I will kill every man that tries to get y/ns heart.." Sonic chuckled and tasted Shadows blood off the knife. "Y/n is only mine.."

YOU ARE READING
Another yandere Sonic X reader
FanfictionI decided to make another one because I like yandere boys. -------------------------- It was a new year in Mobius, your life was pretty average until sonic came into your life and changed himself. From a free spirit type of person to a insane obsess...