i'm pretty sure that bitch took possession of echidna's body, this is not a baseless assumption, why, because when the bitch (anri) looked up, ein said that it seems he saw those eyes before, and looking back at the story, there was a time where ein met the present echidna right.....
so considering all of these facts and how anri acted around miktoran, we can see the resemblance between the present echidna and anri (with present echidnas obsession in resurrecting miktoran and anris obsessive love for miktoran tot he point of showing hostility to past echidna)
i'm pretty sure that bitch took possession of echidna's body, this is not a baseless assumption, why, because when the bitch (anri) looked up, ein said that it seems he saw those eyes before, and looking back at the story, there was a time where ein met the present echidna right.....
so considering all of these facts and how anri acted around miktoran, we can see the resemblance between the present echidna and anri (with present echidnas obsession in resurrecting miktoran and anris obsessive love for miktoran tot he point of showing hostility to past echidna)