
Revered as heroes for their role in defending Tristain, Louise Françoise and her familiar Saito Hiraga face heavy pressure to continue protecting the Kingdom. With an uneasy peace now established within Albion, the newly crowned Queen Henrietta must deal with a political struggle brewing on the horizon. To make matters worse, a new villain has begun plotting in the shadows against the Crown. With the continuing threats that face the Kingdom, Louise and Saito are compelled to work together once ...
When a fledgling mage masters a world‑ending spell, she and her familiar must choose honor over annihilation.
After their legendary stand against the Tristain invasion, Louise Françoise and her reluctant familiar Saito Hiraga find themselves thrust back into the political maelstrom of the kingdom. The newly crowned Queen Henrietta is juggling fragile peace talks while shadowy conspirators stir trouble, and a mysterious new antagonist begins weaving a plot that threatens the royal line itself. Louise, once mocked as the inept "Zero," has unexpectedly mastered the perilous Void magic—a force capable of erasing entire villages in an instant. This newfound power forces her to confront the moral weight of wielding such devastation, while Saito must balance his role as protector with his growing affection for the fiery mage. The duo’s partnership is tested on multiple fronts: battling rogue knights, navigating court intrigue, and confronting the enigmatic sorcerer behind the looming coup. As battles erupt across the kingdom’s borders, Louise’s confidence blossoms, but the cost of her Void spells becomes increasingly apparent. Meanwhile, Saito’s steadfast loyalty and quick wit provide the emotional anchor that keeps both heroes from succumbing to hubris. Together, they must decide whether personal honor or the greater good will guide their swords, ultimately racing against time to safeguard Tristain’s future.
This second season continues the fantasy harem comedy with significantly ramped-up sexual fan service — frequent groping jokes, bath scenes, and suggestive situations dominate the humor. Fantasy action violence and some questionable relationship dynamics round out the content; best suited for older teens comfortable with heavy ecchi tropes.
The Familiar of Zero: Knight of the Twin Moons has 12 episodes.
The Familiar of Zero: Knight of the Twin Moons is currently finished airing.
The Familiar of Zero: Knight of the Twin Moons was produced by J.C.Staff.
The Familiar of Zero: Knight of the Twin Moons aired Jul 9, 2007 to Sep 24, 2007.
The Familiar of Zero: Knight of the Twin Moons is based on a Light novel.
This second season continues the fantasy harem comedy with significantly ramped-up sexual fan service — frequent groping jokes, bath scenes, and suggestive situations dominate the humor. Fantasy action violence and some questionable relationship dynamics round out the content; best suited for older teens comfortable with heavy ecchi tropes.
CM 1

de Tristain, Henrietta
Main
CV: Kawasumi, Ayako

Hiraga, Saito
Main
CV: Hino, Satoshi

Le Blanc de La Vallière, Louise Françoise
Main
CV: Kugimiya, Rie

Chesare, Julio
Supporting
CV: Hirakawa, Daisuke

Chevalier de Milan, Agnès
Supporting
CV: Neya, Michiko

Colbert, Jean
Supporting
CV: Suzuki, Takuma

Cromwell, Oliver
Supporting
CV: Saitou, Jirou

d'Orléans, Charlotte Hélène
Supporting
CV: Inokuchi, Yuka

de Gramont, Guiche
Supporting
CV: Sakurai, Takahiro

de Grandple, Malicorne
Supporting
CV: Tokita, Hikaru

de La Fontaine, Cattleya Yvette La Baume Le Blanc
Supporting
CV: Yamakawa, Kotomi

de La Vallière, Pierre
Supporting
CV: Saitou, Jirou

de La Vallière, Éléonore Albertine Le Blanc de La Blois
Supporting
CV: Inoue, Kikuko

de Montmorency, Montmorency Margarita la Fère
Supporting
CV: Takahashi, Mikako

Derflinger
Supporting
CV: Gotou, Tetsuo

Jessica
Supporting
CV: Higuchi, Akari

Lishman
Supporting
CV: Mugihito

Menvil
Supporting
CV: Kusunoki, Taiten

Michelle
Supporting
CV: Ishimatsu, Chiemi

Osmond
Supporting
CV: Aono, Takeshi

Scarron
Supporting
CV: Gotou, Tetsuo

Sheffield
Supporting
CV: Katsuki, Masako

Siesta
Supporting
CV: Horie, Yui

Stanford, Henry
Supporting
CV: Hatano, Wataru
12 episodes
2008 Fall
2005 Fall
2007 Fall
2014 Summer
2011 Fall
2012 SummerRanked higher than 87% of all anime on AniTome (out of 19,551)
More popular than 98% of all anime