Ep. 10: Hayate consumed by the Book's power while Chrono confronts the Lieze Twins.
Aired on December 4, 2005

10
Hayate becomes engulfed by the power of the Book. Chrono battles masked men and identifies them as the Lieze Twins, who serve as familiars to Admiral Graham. It is revealed that Admiral Graham orchestrated events so Hayate would complete the Tome of Darkness, intending to use this act to seal both the tome and Hayate away. Meanwhile, Arisa and Suzuka uncover the truth regarding Nanoha and Fate. During this time, Fate is absorbed by the Book of Darkness. The episode details the confrontation with Graham's agents and the tragic fate awaiting Hayate as the Tome nears completion under his manipulation.
Episodes
- Ep. 6 · Signum and Shamal recall their past and the decision to gather mana for Hayate's safety
- Ep. 7 · Fate and Nanoha confront Signum and Vita while a mysterious man intervenes in their battle.
- Ep. 8 · Hayate's Health Declines as Nanoha and Fate Visit Her in Hospital
- Ep. 9 · Chrono researches the Book of Darkness while Nanoha and Fate visit Hayate on Christmas Eve.
- Ep. 10 · Hayate consumed by the Book's power while Chrono confronts the Lieze Twins.
- Ep. 11 · Fate Breaks Free From Her Dream and Activates Zanber Blade
- Ep. 12 · Hayate Regains Reinforce and Teams with Nanoha to Defeat the Tome of Darkness Program
- Ep. 13 · Reinforce sacrifices herself to stop corruption as Hayate joins TSAB