Something a bit strange for a Kurosawa movie, Korei is (debatably) a remake of an old American movie (of the same name, if memory serves). It seems that in some of the scenes Kurosawa is much more focused on replicating the emotions of the domestic experience than trying to scare. After all, anyone who's seen Kairo, Cure or Charisma knows he has nearly master the latter. Because of this, if find that Korei is not as frightening as his typical fair. Also, some of the household drama comes off forced for the near first-timer in this field.
But another way of thinking about it: it seems there is a pronounced old-time hollywood feel to some of the home scenes which may have been very intentional. All of the movie is presented as a sort of reference to this: the lightning behind the characters as they think evil thoughts, the simplicity of most of the shots (devoid of the overwhelming atmosphere typically present in K. Kurosawa films), even the fair simplicity of the characters. If it is seen this way (which i am increasingly convinced is how it may have been intended) then it is possible that the unlikely touches seen in this movie are not a failure at all, but an attempt at a homage. Whether that homage is a failure or not, I am in no position to say.
But another way of thinking about it: it seems there is a pronounced old-time hollywood feel to some of the home scenes which may have been very intentional. All of the movie is presented as a sort of reference to this: the lightning behind the characters as they think evil thoughts, the simplicity of most of the shots (devoid of the overwhelming atmosphere typically present in K. Kurosawa films), even the fair simplicity of the characters. If it is seen this way (which i am increasingly convinced is how it may have been intended) then it is possible that the unlikely touches seen in this movie are not a failure at all, but an attempt at a homage. Whether that homage is a failure or not, I am in no position to say.