In this chapter, we learn that the young man is the reincarnation of his dead sister, and that he was the one who implanted the heart in his sister's body. The young man explains that he has a clean background, since his parents have died, and his only sister has a family. He says that he would have agreed to switch his heart even if his sister had not died, but he was too naive to have met the man. He also says that the man is not responsible for her death, because he forgives him just like that. He explains that after transplanting the heart, he often has dreams, and the fragments of the heart are like "rebirth memories" . He asks the man why he made the expression he did, but the man replies that he did not say anything wrong. He adds that he just wants to avenge his sister now, and only the man can help him. He wants to retaliate against the whole rebirth, not just the person who killed his sister, but also the whole of the rebirth. If it weren't for the ugly experiments, he says, there would be no "unowned heart," and the man wouldn't have found him. The man asks if the man wants him to help him get information from the rebirth, and he replies that the pay is too high for him to do so. If he wants to be a "good person," the man says, he can kill the man for him, or he can use the man's heart to get what he wants.