Just personal scratch.
Advised, possible spoilers.
Opinion & Informal
Art: 5/10 Advertisement quality art. Layered pieces and layered sets.
Animation: 4/10 slide-show style and puppet-joint movement.
Characters: 5/10 Same and original. Features a variety of the original series cast.
Plot: NA/10 Advertisement. Advertising the release of the Blu-rays and some other things.
Development: NA/10 Advertisement.
Music: 5/10 The OP, advertisement size. Nothing new.
Conclusion: NA/10 Advertisement. Why are these allowed but not manhwas?
Overall: 4/10 Why is this even a thing? It's an advertisement? It's pretty much stat-padding material. Even for an advertisement it didn't really get my hyped up to purchase any of the products.