That year, eighteen-year-old Han Jin came to R city for an organizational mission. After the mission was over, he was chased to an orphanage on the outskirts of the city. He hid in the room of a mildly autistic fourteen-year-old girl, Tao Ran, and escaped. Later, he returned to R City, adopted Tao Ran despite the procedures, raised her by his side and took good care of her, taught her to read and write, warmed her little by little, and finally gradually opened her closed heart.
At the age of sixteen, Tao Ran was finally willing to speak, but Han Jin was almost shocked.
"Ajin..."
"What did you call me???"
"Ajin!"
"Ranran, you are adopted by me. Even if you don't call me dad, you should at least call me brother!"
"No, just call me Ajin, Ajin, Ajin, Ajin!!!"
"No!"
"Wow~~"
"... Okay, if Ranran doesn't cry, A Jin will be A Jin."
When he turned eighteen, on the eve of Tao Ran's birthday, Han Jin left, saying he would come back the next day to celebrate her birthday, but he never came back...