Hirotsugu Kawasaki: the technical detail that moves mountains in anime

Published on May 08, 2026 | Translated from Spanish

Hirotsugu Kawasaki is a director who understands animation as an exercise in applied physics. A regular collaborator of Katsuhiro Otomo, his name is linked to high-budget productions where backgrounds are not static and characters move with realistic weight. His work in Spriggan and The Millennium Dragon demonstrates an obsession with detail that few can match.

An anime scene with a giant robot in motion, detailed backgrounds, and dust particles, reflecting Kawasaki's technical precision and realistic physics.

Animation with weight: physical realism as a hallmark 🎬

Kawasaki cannot conceive an action scene without the environment reacting. In his films, a punch displaces the air, a footstep raises dust, and structures deform upon impact. This approach, inherited from Otomo's realism, requires meticulous storyboarding and precise coordination between background and character animation. The result is sequences where the virtual camera seems to have mass, and every movement obeys the laws of inertia and gravity. There are no concessions to easy digital shortcuts.

When the director is also a plumber of physics 🔧

Watching a Kawasaki film is like watching a plumber fix a pipe: you know it will work, but the process is so technical that you lose track of time. In Spriggan, characters run as if they have a mortgage to pay, with every stride calculated so the ground doesn't complain. And in The Millennium Dragon, creatures move with the elegance of an elephant in a china shop. It's all very realistic, but sometimes you miss a character floating a bit without having to justify it with Newton's third law.