Process
Storyboard to broadcast: the seven real stages a cut passes through, and the frame-hold decision made at every one of them.
The seven stages
In production orderFrame-hold reference
By conventionEvery hold in this table is exact arithmetic against the same 24fps drawing base — not a stylistic label.
On ones: A new drawing every frame — 24 unique drawings a second. Reserved for the highlight cuts (sakuga) a studio wants to sell: a fight climax, a transformation, a hero shot. Expensive in genga and douga both, so it is spent deliberately, not everywhere.
On twos: Each drawing held two frames — 12 unique drawings a second. The default for the large majority of a TV episode: dialogue scenes, walk cycles, ordinary reaction shots. Motion still reads as smooth to most viewers; drawing count is halved.
On threes: Each drawing held three frames — 8 unique drawings a second. Used for slower, calmer or lower-priority cuts, often mixed with held poses and camera moves on the background layer instead of the character, to keep a scene's cost down without going fully static.