OVA

Episodic continuation of the manga chapters that have not yet been presented as part of the series. Each OVA has a preview of the next OVA.

OVA 1: Shampoo's Sudden Switch: The Curse of the Contrary Jewel

OVA 2: The Tendo Family's Christmas Scamble

OVA 3: Akane vs. Ranma: The One Who Inherits Mom's Recipes Will Be Me!

OVA 4: A Storm over School: Growing Up with Miss Hinako

OVA 5: The One Who Carries On - Part 1

OVA 6: The One Who Carries On - Part 2

OVA 7: Reawakening Memories - Part 1

OVA 8: Reawakening Memories - Part 2

OVA 9: Oh, Cursed Tunnel of Lost Love! Let My Love Be Forever

OVA 10: The Evil Orge

OVA 11: The Two Akanes: Ranma, Look My Way!

Quantify: non-standalone OVA serie(s)

in my opinion, it should go to it's own season or for each subset it's own season (6 OVAs, Special 2 OVAs, Super 3 OVAs).

Movies

Movie 1: Ranma 1/2: The Movie - The Battle of Nekonron: The Fight to Break the Rules

Movie 2: Ranma 1/2: The Movie - The Battle of Togenkyo: Rescure the Brides!

Movie 3: The Super Non-Discriminatory Showdown: Team Ranma vs. the Legendary Phoenix

Rules

OVAs

Standalone OVA series are added as TV entries with blank Network fields and "Video" as their TV Show Type.

Standalone single-episode OVAs are added as one movie entry.

Single-episode OVAs that are considered to be additional content to a previously released anime series (e.g. bonus episodes, short side stories) should be added to the matching show's special.

We're still working on the guidelines for non-standalone OVA series. We will figure them out soon.

Should I add new episodes to the existing season, to a new season, or as a new series?

The answer lies with the original Japanese data.

Long-running series with continuous episode numbers (e.g. 867, 868, 869) are added as a single season.

Sequels series (i.e. a direct continuation of the story) are added within the same entry. When the episodes numbers are continuous, all episodes are added to the same season. When the episode count is restarted (i.e. the first episode is Episode 1), the new episodes are added as a new season.

Episodes airing in a split cour format (e.g. Episodes 1-13, break, Episodes 14-26) are added in a single season. Examples: AKB0048

When a series is released in two or more parts, the new episodes should also be added to the same season when the episode number are continuous. Sometimes the production of new episodes is halted for a year or more. Examples: Fairy Tail / Fairy Tail (2014), Dragon Ball Z Kai / Dragon Ball Z Kai: The Final Chapters, Naruto / Naruto Shippuden

On the other hand, reboot series, spin-off series, series set in an alternative timeline, new adaptations based on the same source material, ... are added as a new TV entry. Examples: Digimon

We strongly recommend using the official Japanese website. Databases such as anidb, MyAnimeList and Anime News Network, or trustworthy sources such as Syoboi can help you make informed decision, but they should be used with caution. And please keep in mind that every database has their own, unique guidelines.

Specials

Special TV episodes, single-episode OVAs, recap episodes (unless they are numerated as regular episodes), bonus episodes bundled with the DVD release, and any episodes that didn't air during the initial Japanese TV broadcast belong in the Specials.

Movies are added as movie entries and shouldn't be duplicated in the specials.