In contrast to the cold precision of machine sakuga, we have “effects” sakuga, which boils down to really detailed animations of “magic, superpowers, explosions, smoke, fluid, whaetever else.”
I didn’t expect to see western animation sequences here. I spotted the ol’ favorite, Secret of NIMH, at 16:04, and Rick & Morty, which I have never seen and refuse to watch, at 13:27.
Someone in the comments said the possessed boar sequence from Princess Mononoke at 3:47 took two years to animate, which is true, turns out.