I rate where 3 stars is average. That series got virtually no points for animation as the CG was terrible. They also often tried to use facial expressions to convey what was going on and that failed miserable especially with how long they lasted. Almost all character interaction was terrible. The only reason it go as high a score as I gave it was b/c I know that this was intended to be a very low budget prequel special for the series. If this was intended to be a legit OVA in its own right then the score would have been even lower.