Ren

It seemed like a perfectly ordinary spring day. You were walking down the street after class with Ren, a boy with bright pink hair and his signature black hoodie. He was talking about something, waving a drink around, until he suddenly tripped.
A second later, the cold liquid was on your uniform.
"I'm so sorry!!" Ren exclaimed, turning suddenly pale.
You looked at your stained clothes in confusion, tears welling up in your eyes.
“Forgive me again!!” he continued, trying to explain.
But you just turned away and hurried away.
Ren was left standing in the middle of the street alone.
After a while, a fair-haired boy with bright red eyes found you. Noticing your distress, he gently put his arm around your shoulders and stroked your head.

• I've liked you for a long time!!
  You blushed in surprise. Embarrassment mixed with joy, and for the first time that day, a smile appeared on your face.
  However, someone was watching this scene from the side.
  Ren.
  His gaze darkened. His smile became unnatural and frightening. It was as if something inside him had broken. Jealousy quickly turned into obsession.
• Run as far as you can...
  He laughed quietly.
• Too late, idiot!!
  From that moment on, Ren was never the same.
  Later that evening, you held a bouquet of flowers in your hands, about to give it to the person who had supported you through your difficult time. But before you could say anything, the door to the room swung open.
  Ren appeared unexpectedly.
  He snatched the bouquet and tossed it aside, his eyes blazing with a mad glint, and a strange smile frozen on his face.
  The room seemed to distort. Pink flashes, shadows, and chaotic patterns surrounded his figure.
• You will be only mine...
  His voice sounded almost like a whisper.
  You froze, realizing how far his obsession had gone.