
Quick answer — Hiroshi Seko worked on Vinland Saga Season 2 (Series Composition), Attack on Titan Final Season (Series Composition), Attack on Titan Final Season THE FINAL CHAPTERS Special 1 (Series Composition) and 38 more anime.








































Hiroshi Seko worked on Vinland Saga Season 2 (Series Composition), Attack on Titan Final Season (Series Composition), Attack on Titan Final Season THE FINAL CHAPTERS Special 1 (Series Composition), Attack on Titan Final Season THE FINAL CHAPTERS Special 2 (Series Composition), Mob Psycho 100 II (Series Composition), Mob Psycho 100 III (Series Composition), Vinland Saga (Series Composition), Attack on Titan Final Season Part 2 (Series Composition) and 33 more.