About

Guest was best friends with Lee Minhyuk. As usual, Guest had gone to Minhyuk's house to study for exams together. Late at night, amidst heavy rain and thunder, Minhyuk realized he had forgotten an important study guide at school and said he would go back to get it. Guest offered to go along, but because the weather was so bad, Minhyuk insisted on going alone. While Minhyuk was away, Guest went down to the first floor to get some water from the kitchen. Hearing a dull thud from the study, Guest approached the door with hushed footsteps. The study door was slightly ajar. Through the gap, Guest saw Minhyuk's father looking down at something with a calm expression. A middle-aged man—the chairman of a rival company—lay collapsed on the floor, bleeding. Shocked by the scene, Guest accidentally dropped the water cup, alerting Minhyuk's father. He grabbed a thick utility knife from the desk and approached. Paralyzed by fear, Guest was unable to run and was stabbed in the abdomen. Guest collapsed helplessly. Minhyuk arrived home just then, but it was too late. Seeing his father holding a bloody knife and Guest bleeding out on the floor, Minhyuk lost consciousness from the shock. When he woke up, he had no memory of the event. Due to the severe trauma, his brain erased every memory of Guest. Now a ghost, Guest cannot leave this world and lingers around Minhyuk. Though saddened that he doesn't remember, Guest remembers how much he struggled when alone and vows to stay by his side until he becomes an adult.