Slayers Premium (スレイヤーズぷれみあむ, Sureiyāzu Puremiamu?) is a anime film written and directed by Junichi Satō. Premium, the fifth and latest Slayers film, was first released in Japan on December 22, 2001, along with Sakura Wars: The Movie, DiGi Charat and Azumanga Daioh: The Very Short Movie.

This is the only Slayers movie so far to feature the characters of Lina (Megumi Hayashibara), Gourry Gabriev (Yasunori Matsumoto), Amelia Wil Tesla Seyruun (Masami Suzuki), Zelgadis Greywords (Hikaru Midorikawa) and Xellos (Akira Ishida). Naga the Serpent (Maria Kawamura) also has a small role, as "the octopus sorceress". It should be noted, however, that as is the tradition with all of the anime movies and series published thus far, Naga does not actually meet or interact with any of the other main characters.

Source: Wikipedia