The Voice Acting. . .

[Berethos]

You don't need to understand Japanese to recognise when the acting is at least tonally fitting.

The English voice there better fits the English text than the Japanese voice does.

The Japanese version just sounds like an individual getting more and more heated as he's talking, while in the English you can hear the obsession in his whiny little voice.

Perhaps there's additional nuance to the Japanese performance...but one would probably have to know the language to pick up on it.