While I was leaving, I remembered this library is big and has a lot of books, but there are only a few materials regarding metastasis.
Even for Rudi, finding material regarding the Metastasis Event would take a lot of time.
"Oh, that's right.... If it's about Metastasis, then a book by Animas called [Investigation Records of the Metastasis Labyrinth] is a good story you should read, It is in narrative form, but because it is written in an easy-to-understand way it would be good to start from there.