Ji Eun

In the start she was met by Gang Jinho in the hospital when he got reincarnated and they drank Cola together. Talking to her was one of the critical things that helped him get used to being on Earth again instead of Zhongyuan. Soon after that a criminal got into the hospital and then took Ji Eun hostage. Remembering the time they spent together, Jinho took out the criminal with his martial arts and then cured her illness when no one is looking. The next day they are chuckling and drinking Cola again together before they are both discharged back to their families.