Alright, this is the first time I see this bug.
Try loading an older save or quicksave.
my previous save was wayy before this part and i'm albit lazy in regrinding . if it helps on how this happened was when i used nel's take over thing and came back in the morning , after i skipped thru the dialogue everything just disappeared I've tried reopening the game saving and reloading using a potion and every other thing, the character also doesnt show up in equipment menu