Talk:Natsuki Subaru/Synopsis/@comment-36459450-20181029045302

This is just my speculation but, since Subaru is considered to have the necessary qualtites to become a sage, the tower is probably one giant trial for him to overcome for him to become a sage or something like that. Since becoming a Sage is obataing wisdom and being more powerful, the being that takes over Subaru is probably another version of himself to test Subaru. His memories were probably taken away in order to force him to find out who he truly was and become a better person.