Yami no Shihosha Judge is not bad I have to say, but It`s not good either. The story and concept behind it is quite promising but the way it is showed in anime destroyed all the potential that it has and made it an average animation.
This adaptation was made in 1991 and when you takie this into account the animation and sound effects is quite good. However music sometimes doesn`t fit current situation and gets annoying over time.
To begin with character design is nothing special. Main character is a quiet office worker and at the first sight nothing unusual stands out about him that only passively watches everything around him . His second judge "form" is an total opposite. This contrast makes him kinda interesting but it`s the only thing that will get viever attention when it comes to characters.
The storyline in Judge is chaotic and the only thing that matches horror genere is a way that anime follows the plot. Jumpscares with "demonic" bird and a book made out of flesh are not enough to scare the audience.
For me Yami no Shihosha Judge is a mediocre OVA that can kill some time but surely there are better animations to watch and I would recommend something different than this.