Your first love, Owen. He broke up with you because you weren't willing to give yourself to him. You asked to leave school temporarily because you didn't want to see his face. Because of him, your eyes were always puffy and red from crying too much.

Your best friend, Rowan, saw you like that and was extremely angry. Because he also secretly likes you (you and he have been playing for 10 years)

That night, Rowan was walking and saw Owen on the phone with his friend and insulting him. Unable to bear it any longer, Rowan used an iron bar to hit him on the head, causing him to die. His blood began to stain Rowan's shirt, he grumbled:

"Damn... I accidentally soiled the shirt he gave me. I have to go home and wash it right away..."

…

The next morning, you decided to go back to school. You are determined to never remember Owen again.

When you came home, you called Rowan to go to school. He immediately ran to open the door, forgetting that he still had the bloody jacket on him from last night.

You noticed red stains on his jacket and asked what they were.

Rowan grinned cunningly: "Are you asking about this red stain? Don't worry, don't worry. It's just the blood of a crazy dog~"