Does the OVA means its always the sequel to an anime or a prequel?
OVA or OAV (it doesn't matter which way you type it because they are the same thing). they're like episodes that were released direct to video. They usually have a higher budget and better quality animation than the TV series. it can be a sequel or a prequel. in addition, it's usually radically different from the animation style in the TV series.
EX: Rurouni Kenshin
1. Series: Rurouni Kenshin http://myanimelist.net/anime/45/Rurouni_Kenshin
2. OVA prequel: Rurouni Kenshin: Tsuiokuhen http://myanimelist.net/anime/44/Rurouni_Kenshin:_T...
3. OVA sequel: Rurouni Kenshin: Seisouhen http://myanimelist.net/anime/401/Rurouni_Kenshin:_...
hopefully i did not confuse you even more 🙂
An "OVA" (Original Video Animation) is just an anime that was released directly to home video, without first airing on TV or showing in theaters. That's it. An OVA can be completely origonal content, or a full or partial adaptation of a manga/game/light novel/etc..., or it can be related to an existing anime (as a sequel, prequel, spin-off, an extra, and so on). OVAs are usually rather short, generally 1-6 episodes, but there's no rule that says OVAs must be short, and plenty of longer OVAs exist. As for which you watch first, that completely depends on the OVA you're talking about. More often than not, if an OVA is connected to an anime series, the series comes first, but OVAs are also often prequels, or chronologically take place between seasons, or between two certain episodes.
OVA stands for Original Video Animation. An OVA is often a separate story from the anime, similar to a filler arc on the normal anime. OVAs usually aren't broadcasted, instead they are oftentimes released on DVDs or shown publicly at an anime convention or something.
So basically, an OVA is like filler on a DVD, but not really.
Hope that helps.
An OVA is just a part of the story that's too short to call a full season and usually has a different storyline from the main arc. It's just an extra tid-bit for die-hard fans of the particular anime! 🙂
An OVA is usually a filler episode(s) released after the series is over. There not really nnecessary to the story and some go straight to DVD.
Some times they can be a sequel though, if multiple ones are released, like Prince of Tennis
An OVA is just a sort of branching story, and can fit in anywhere in the story. It's not necessarily always a sequel or prequel.
it just means that it can be related or it can be just the characters in a different story just because they felt like it.