My Deskmate Is a Yin-Yang Master

I’ve been able to see ghosts since birth. To stay alive, I pretended not to see them for seventeen years. Until that cold, aloof school bully cornered me against a wall, wiped away my tears, and whispered: “I’ll protect you. You’re the only person in this world. If you die, the world disappears. If you exist, the world exists.” Later, I peeked at his notebook. It said: “How to make her willingly become a ghost to die in her place.”