he gets this book about the ancient meditation technique to be a magus on chapter 110+. the academy uses grine water and force mediatation technique to get past acolyte to magus. i forgot which chapter where he knows why he needs the ancient meditation technique of that warlock magus. i forgot what is his something bloodline so that it can match with his body. i remember its the vengeful spirit telling him this. at which chapter is it? Thanks!