Dr. Jinsoo says that he is still having a hard time getting over the fact that the woman he is having sex with is "worn out" . He wonders if he should find another woman to have sex with. He says that now is not a good time to worry about other people, and he needs to do something about the "yin energy" that is causing him so much pain. He asks the nurse if she has any business, and the nurse says that she will go and sort out the problem. The doctor asks where the nurse is, and she says that the nurse has gone to the storage room. He realizes that the yin energy that he felt from the nurse was gone, and that he was supposed to return it.