They're in the train.

"Y/n"

"Yes"

Hajun's tears were coming out. "The end is here..." Hajun said. "What do you mean..?" asked Y/n. "I.... got... bitten...." said Hajun and his tears came out. "W-what..? You didn't say that right...? H-how should I live now...? DON'T LEAVE ME ALONE!!!!!" Y/n started to cry. "I don't want to live if you die!!!!! Please bite me!!!" she started to cry even more and more. Hajun also started to cry. "Y/n. You're the best in my life. Even if I die now I'll be forever with you. Life is hard. You're strong. You can do it without me. I can believe in you." he told her and hold her hand. " Please don't go..." Y/n said sadly. "But I have." he said and gave her a necklace. He had his name on it. "I'll never forget you." he said and smiled at Y/n. He went out of the train and started to cry. He ran away. "HAJUN!!!!!! DON'T GO PLEASE!!!!!" Y/n started to cry again.

THE END!