@rendrakb @djamilaknopf The case of Totoro perspective is a completely different issue. It is not due to the irregularities in the real world, but to the correction of human vision by the brain.
This perspective is not unique to Ghibli works. When a person's line of sight pans horizontally, the vanishing point moves accordingly. As a result of combining these into one picture, the picture has multiple vanishing points.