After buying all those books, Allen already came back to his hotel room that the warrior association prepared for him. This time after coming back to his room he carefully observes around his room and tries to search for any device that could work like the CCTV camera. But in the end, even after using his high sense skill he did not find anything and with that, he became sure that nothing like that was present in his room.
Actually, even though he did not want to use the system to enter the Dungeon while he was in this hotel room, he did not have the time to read those books. So this is the only way he could carefully read all those books.
