Jigsaw Puzzles For Sale Grain is your friend

Unusual, some people treat the grain as if a messenger from the underworld whose goal is to "smear" the anime ... It could not be further from reality. The film grain effect is a added by the animation studios to enhance video detail, especially in dark scenes. Previously, the grain had to be removed because it had that purpose (see animes old to understand what I mean), but today should be kept in its entirety. Remove
grain filters involves using temporal, frequency , etc. And you know what can cause andnts filters will put that to the effect of pursuing those old movie scenes in the intro is not at all, even the hair on the bottom left you see the version of AT, or the scratches above. TL, DR My advice is to preserve the original grain, always. The exaggeration of filters because it's the first image.