/jp/ - Otaku Culture

Question on Harumade Kururu. This might get answered later in the game, and if so then I'll wait to see it, but just in case I'm right after Fuyune's giant info dump. Question about the whole nano device that picks up memories thing. Why is Kazuki's inactive up until then? How did that happen? Then, how did it get turned back on? They might have directly covered it in the info dump, but I might have missed the explicit answer given the huge amount of information being thrown at me at once.