Before she leaves, Mina tells Nerissa that if something happens to her in the future, she should look for the book in her mother's library. She asks if there is a similar book in Nerissa's place, and Nerissa says that since she was with her mother since the beginning of the book, she can search for it in the library or in the lab. She says that the successor to the magic circle will have the responsibility of maintaining the happiness of the people. She also says that after decrypting the book she will be able to effectively absorb mana in the form of lataa, which means that she has committed many sins. She explains that the place that she is abandoning must be her "vital points" , and that her eyes must be "something wrong" . She then says that if she were her original, she would have detected her vital points by detecting the "flow of mana" but she must have used a different way to do so. She adds that she can't understand why Nerissa is doing this, as it seems to be a "personal motive." She then asks if he has found someone worth risking his life, and he says that he cannot speak. He says that his intellectual development is "truly fascinating," and that his mother is the one who has done it.