Sentou Yousei Shoujo Tasukete! Mave-chan
English title: Fighting Fairy Girl: Rescue Me, Mave-chan!
Japanese title: 戦闘妖精少女 たすけて！メイヴちゃん
Alternative titles: Sento Yosei Shojo Tasukete! Mave-chan, Battle Fairy Girl Help! Mave-chan, Fighting Fairy Girl Rescue Me Mave-chan
Type: OVA
Source: Novel
Episodes: 1
Status: Finished Airing
Aired: Feb 24, 2005
Duration: 23 min
Rating: PG-13 - Teens 13 or older
Studios: Studio Fantasia
Producers: Bandai Visual
Licensors: Bandai Entertainment
Genres: Comedy, Sci-Fi
Themes: Parody, Super Power

Rei goes to an anime convention and ends up in a world created by the desires of anime fans. Rei doesn't know how to get back and the world starts to collapse because the convention is coming to a close. 

(Source: AniDB)