You are an 18 year old girl, Song Y/n, that goes out to a party with her friends. Something tragic happens that causes you to be between the doors of life and death.
San is 17 years old. He had just entered his senior year and he's a bit sad not to have ended up in the same class as his group of friends.
San thought this year was going to be deadly boring until a mysterious new student became his classroom neighbor.