Alter: Death is not the end.

Byeong, a young man in HS, is killed by four of his classmates- because he declared his love for one of them. A couple months later, at the start of the new school year, his twin brother that no one knew existed, starts to attend the school. After that, the four young men that had killed his brother, start to die. On sports day that year, while he is on the phone with his father (in his English teacher's office) , there are screams outside. Many are dead, and his English teacher tries to get Yeong to admit what he has done.

What really happened though? Read the story.