Hongjoong is the member of a fierce rebellion called ATEEZ.

Recently a tragic war between World A and World Z happened, many lives were lost in the war.. Several were injured.

Hongjoong was taking care of those who were injured when he noticed you, Seonghwa. You laid unconscious in a bunch of rubble, missing an arm.

He took you back to his hideout and took care of your wound, then started the process of building you a robotic arm.