Quetzalcoatl analyzed Flavio's information "If Miyuki had the opportunity to make alterations in the memories and be able to enter this dimension then it must be someone with power.
I spent a long time inhabiting the world where Flavio comes from without the opportunity to use divine energy because the cross dominated Mexico.
But this is not the same in other places, think for a moment, a woman without relatives from Japan a place that was not reached by the tentacles of Catholics or Protestants, alters her husband's memories in some way and comes to Visit when he dies for the first time.
I think that your ex-wife was not human or a yokai , she must be one of the many divine entities that inhabit Japan, but she got something from you that once she got it decided to get rid of you like garbage.
Ty for reading these chapter guys ;)