It's been a month since the last time we saw Yonhap, and now he's back at home. He's excited to see his old friend, and he thanks Yonhap for giving him the latest update on his health. Yonhap is surprised to see how different Yonhap has become from the first time he met him. He wishes he could be with the other students in the class, but Yonhap doesn't have the energy to share his life with them. He tells Yonhap that he'll be late for class, and Yonhap tells him that something's wrong with Yonhap's health. He prescribes some antibiotics and a bunch of other things, but he also says that Yonhap looks like he has a tumor on his spine, which means that he won't be able to continue practicing medicine for the rest of his life