Lina Inverse, a wandering sorceress and bandit-killer, joins forces with roving swordsman Gourry Gabriev in what's supposed to be a quick union of convenience.
This is the main slayers manga, adapted from the Slayers novels vol.1-8. The fourth volume is adapted from the Slayers Return movie.
Background
Choubaku Madouden Slayers was published in English as Slayers: Super Explosive Demon Story by Central Park Media from July 9, 2002 to March 9, 2005, and in Polish as Slayers: Magiczni Wojownicy by J.P.Fantastica.