The book that he received from Erika was already old. She said that it was sold by a senior to her at a low price compared to brand-new ones.
Miguel began to read the moment he arrived at his room.
Fortunately, Sara had always taught the fool Miguel how to read before. She believed that Miguel was only a late bloomer, hence the reason why he did not talk when he was young. She persisted in teaching him how to read in the hopes of hastening his ability to talk in the future.
Even from his previous life, Miguel has always been diligent and thirsty when it comes to knowledge. He enjoyed reading new information, especially from cultivation techniques that he can get inspiration with. He was not called the Sage of Boundless Knowledge for nothing at all.
The book that contained information of the known beasts was more appealing to him than playing with Gasper.