[Coldsaturn]

Oooooh congrats for finishing Lucid Dream! What a journey! I will properly comment other parts in detail later, but for now I'll add:
Caleb loses has his memory reset when he's emotionally unstable, but he never forgets MC. With the now canon info that there is a part of his brain that has been sealed away from the chip, we can deduce that 7% of his brain is all her. And of course she must also be the key, that dude probably set all his passwords to be her birthday date.