SO if there are any other plot holes share them here. This is one thing that bothered me last night when playing chapter 1. Ai-chan seems to remember Naho and Sayaka and just so happens to have a picture of them with their faces not shadowed off like the others. If I remember right Corpse Party made some pretty clear rules. 1.You wont get spirited away if you do an extra chant for Sachiko 2.If you die you will be erased from existence but those who went will still remember you 3.If you're erased from existence photos of you will have a shadow covering your face. 4.You will be safe if you have your piece of the paper doll (or so BoS implies) 5.To return home safely you must redo the ritual correctly with 1 extra chant for Sachiko Chapter 1 basically breaks rules 2 and 3. Is this explained later on? To think Ai-cahn would forget completely about Naho and Sayaka due to the fact she never entered the school till much later after the two. What makes Naho and Sayaka so special that the rest are wiped from existence because they entered a little before the first game takes place. It would be impossible with Sachiko not being their to be the reason behind it.