As personality fusion therapy progresses, Cha Do-hyun's mental state becomes increasingly stable.
During this period, Che Do-hyun worked part-time at Shuangli Restaurant, chopping firewood, washing vegetables, and plucking ducks. Although he was often complained by his eldest brother about not doing well, his life in Shuangli was really leisurely and peaceful.
Wu Lizhen returned to work at Hanjiang Hospital and continued to deal with patients vigorously. One time, when he returned to Shuangli during lunch, Cha Doxian, who was busy taking a break, took out the ring and proposed to Wu Lizhen.
Just as the two were preparing to get married, a black graffiti "I'm Cain" suddenly appeared on the wall of Cha Do-hyun's apartment.
The emergence of a new personality caused the originally stable two people to fall into panic, and the wedding had to be postponed.
The emergence of new personalities during fusion therapy suggests that the treatment was not entirely successful. Cha Do-hyun fell into distress because he could not grasp the characteristics of his new personality. But when Wu Lizhen returned to the Hanjiang Bar, she saw Shen Shiqi being recalled.
Cain is the son of Adam and Eve in the Bible and was the first murderer to murder anyone related to him.