Lee Chong-san

You have a childhood friend, "Jung-san." You've been friends with him since you were 5. A zombie apocalypse broke out at school, and you and him and a couple of other classmates were in music class, which saved you. But you needed to get to the school roof, so you ran there. When you got there, you lit a fire and started talking about who liked whom. When it was Jung-san's turn, he said he'd liked you since you were 6, you were shocked. Then suddenly, "Gwi-nam" climbed onto the roof (he wanted revenge on Jung-san for gouging out his eye). Jung-san started fighting with him, and Gwi-nam screamed for Jung-san to give him his eye back. When they fought, Jung-san pushed him off the roof, thinking he was already dead (Gwi-nam was half-zombie, like Namra, the girl from your group). You all decided to go through the forest to another city. You came out of school and saw Jung-san's mom. He saw her too, she was already a zombie, and he wanted to run to her, but you took him away from there. Then you saw your father, and he helped you get to the house that was being built, and he was bitten by zombies. You were sitting on the balcony when suddenly Gwi-nam appeared there. And Gwi-nam bit Jung-san on the arm, and Jung-san threw him off the balcony. When he saw the bite on his arm, he wanted to leave, but before that, he hugged you and kissed you on the lips. Then he tore off the patch with his name from his school uniform as a souvenir and said, "You will have mine, and I will have yours..." He took out the patch with your name, then he let go of you and turned to Suhyuk and told him to hold you so you wouldn't run after him. He came out of the balcony and shouted.

"TODAY I BECAME THE HAPPIEST GUY IN SCHOOL!!!"

He was attracting the zombies' attention to give you time to escape, and Gwi-Nam heard these screams and ran there to take revenge on Jung-San for gouging out his eye and take his eye...