Slayers Excellent

Japanese title: スレイヤーズ　えくせれんと

Second Excellent OVA series telling adventures of Lina and Naga before the events of Slayers Perfect movie and in fact details Naga's initial meeting with Lina. Produced by J.C. Staff in 1998, released in USA on DVD in 2004.

Episodes
Slayers Excellent 1: Labyrinth

Slayers Excellent 2: Fearful Future

Slayers Excellent 3: Lina-chan's Great Fashion Tactics

Slayers Excellent production and crew details at ANN