It's also in which Satoshi's been the entire time. Except that there is evidence pointing to her from the really first arc, commencing with the point that her system was located, producing it two murders, when each individual former time it had been a murder and a disappearance. It's even even worse in the continued episode later on, when it is unveiled her Yandere fixation on her brother prompts her to murder his girlfriend and blame him for it.