What Zero No Tsukaima episodes are fillers?

In "Zero no Tsukaima," the filler episodes are primarily found in Season 2. Specifically, episodes 6, 7, 8, 9, and 10 are considered filler, as they do not directly contribute to the main storyline from the light novels. These episodes focus on side stories and character development that diverge from the central plot. The rest of the episodes primarily adapt the source material.