- 12-Episode Anime: An anime show that intentionally lasts only twelve episodes.
- Aborted Arc: An ongoing storyline is abruptly dropped and never resolved.
- Arc Welding: The stories of a previously episodic show are retconned to be part of one overarching story arc.
- British Brevity: The tendency for British shows to be short (in comparison to American shows).
- Finale Season: The last season of a series, which comes with a conclusive story arc to wrap up everything.
- Five-Episode Pilot: The series begins with a multi-part episode.
- Front 13, Back 9
- Half-Arc Season
- Layout of a Season
- Mid-Season Twist: An episode which serves as a climactic moment during the middle of the season's story arc.
- Mini Series: A TV series which was intentionally produced to only run for a single season.
- Myth Arc: A story arc that spans the entire series.
- Not So Episodic: A show's story appears to be episodic, but is revealed to actually have been part of a wider Myth Arc all along.
- Post-Script Season: A show gets renewed for more episodes after it was supposed to end.
- Rotating Arcs
- Season Finale: The last episode of a specific season, (usually) concluding that season's story arc.
- Season Fluidity
- Seasonal Rot: The opinion that a show has declined in quality because it's lasted way too long.
- Second Season Downfall: A show's second season is so poorly received it doesn't get a third.
- Sophomore Slump: A show's second season is seen as a letdown, but things pick up again in the third season.
- Story Arc: A storyline that takes multiple episodes to resolve.
- Synchronous Episodes