I'm still a bit confused on the name change thing cause it seemed like it was them playing a prank and they weren't at the same time.
If you don't return the necklace...then Krystal's name changes (or is it the other way around...). When you meet her and Darci in school...Darci then make note of you calling her the wrong name and IIRC (been a while without checking) she then makes a joke about it outside the house later.
I think...lol..been a while since last played that section.
Yeah we are all aware that it happened but none of us are "100" which part stuck or was fake I think i recall the name she is called in game switching around (like adding a ? iirc)
i view it as having not worked because at the start of the game she has (X) name and now she has (x) name which is the same? Unless she had the changed name until MC went to the past for the 2nd time and then it went back?
I feel like the first time I played through it (update 4 was most recent) that i didnt even 100% understand what had happened