In the presentation, these details are sharpened to an incredible degree:
Optimized bitrates that prevent "banding" (ugly color lines in gradients like skies), which is a common issue in lower-quality anime rips. A Story for the Ages Your.Name.2016.2160p.UHD.BluRay.x265-VALiS-EtHD-
The precision of the drawing becomes more fluid, removing the slight "softness" found in standard 1080p versions. In the presentation, these details are sharpened to