I didnt get a single explanation with my questions but okay.
Not sure if this is 100% accurate but I hope it helps
Well the ml forgot his memories due to the trauma he endured as a kid (growing up as an orphan and people constantly talking poorly about him). As for the mirrors I think it the alternate mirror world exist everywhere but the parents had the mirrors in that room as a punishment to scare the seme when he was a kid











AHHHHHHHHHHHHHHH June 9th/10th shall be declared as The Awakening of Claude Holiday
I agree! Let’s make this a worldwide “The awakening of Claude” holiday.