The 90-second anime opening (OP) and ending (ED) sequence is a distinctive cinematic form. It must function as a teaser, a music video, a credits card, and a brand statement simultaneously. Several directors — Yutaka Nakamura, Yoh Yoshinari, Akiyuki Shinbo, Shingo Natsume — have used OP and ED sequences to produce some of their most ambitious work, with budgets and animation density disproportionate to the rest of the production.
Function and structure
The standard OP is 90 seconds; the standard ED is 90 seconds, sometimes shorter. Both reuse the same animation across the season (or arc) and function as visual signatures the audience watches dozens of times. The OP typically establishes the cast, the antagonist or central conflict, and the emotional register; the ED is often quieter, sometimes purely abstract.
OP/ED as authorial space
Because OP and EDs are produced once and reused, studios are sometimes willing to assign more time, more skilled animators, and a higher per-second budget to them than to the regular episode footage. Several of the most discussed pieces of anime animation in the past two decades — the Mob Psycho 100 season-two opening (Bones, 2019), the Cyberpunk: Edgerunners opening (Trigger, 2022) — are OP sequences.