Reinforce is a key character in Magical Girl Lyrical Nanoha A's, who reveals herself near the end. She does not appear in either Magical Girl Lyrical Nanoha or the alternate universe shown in the Triangle Heart series. She is voiced by Sanae Kobayashi. The former Book of Darkness and creator of the Wolkenritter (Signum, Vita, Shamal and Zafira), Reinforce was reformed by Hayate Yagami and became her partner.  Reinforce is a Lost Logia and an intelligent creation of Belkan mages whose names have been lost to time. In Magical Girl Lyrical Nanoha StrikerS, she is reformatted into the much smaller Reinforce II.  Hayate, inside a void in the Book's separate dimension, opens her eyes, but the Book tells her to go back to sleep and escape the tragic reality. She could stay with her friends forever, but it would not be real... Hayate cries out that she did not want this at all. Absorbing the knowledge of the Book of Darkness, she realizes the truth of everything that has been going on behind her back, the innocence of Nanoha and Fate and the sadness of the Wolkenritter. That cannot be forgotten, Hayate asserts. She is the mistress, and the Book has to do what she says. Just as the Book has Nanoha cornered, Hayate takes control of her body again so that Nanoha can disable it and Hayate gives the Book a new name, "Reinforce".  (Source: Wikipedia)

After the events of the Lost Logia case, Nanoha waits patiently for the day she can reunite with her newfound friend, Fate. Although being an exceptionally powerful mage, Nanoha spends her days normally with her friends on Earth. But peace is once again suddenly shattered, as Nanoha is without warning attacked by a powerful mage. A group of violent mages have been attacking anything with magic power for their own goals. Nanoha and Fate, along with their friends Yuuno, Arf, Chrono and the Space/Time Administration Bureau must once more band together to stop these renegade mages from hurting anyone or anything else. Takes place after the first season of Lyrical Nanoha.

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**Non-anime roles:**
- Aile - Rockman ZX Advent (VG)
- Akari Tatsushiro - Naruto Shippuden: Ryujinki (VG)
- Akira Okuzaki - Mai-HiME: Bakuretsu! (VG)
- Aleria - Final Fantasy Crystal Chronicles: Ring of Fates (VG)
- Alex Russo - Wizards Of Waverly Place (Japanese dub)
- Allen Walker - J-Stars Victory VS (VG)
- Ashley Hammond/Yellow Ranger - Power Rangers in Space (Japanese dub)
- Ashley Hammond/Yellow Ranger - Power Rangers Lost Galaxy (Japanese dub)
- Cecilia Lynne Adlehyde - Wild Arms Alter Code: F (VG)
- Charabom - Bomberman Generation (VG)
- Constable Neyla - Sly 2: Band of Thieves (VG)
- Dalia Hakbarah - You Don't Mess with the Zohan (Japanese dub)
- Ender - .hack//Link (VG)
- Fumiko Kii - Inazuma Eleven Strikers (VG)
- Gemini Sunrise - Project X Zone (VG)
- Gemini Sunrise - Sakura Taisen 5 Saraba Itoshiki Hito Yo (VG)
- Gemini Sunrise - Sakura Wars 5 Episode 0 (VG)
- Guel in "Inazuma Eleven Strikers" (VG)
- Higure - Blood Alone (Drama CD)
- Hong Lihua/Reika - Super Robot Wars Z (VG)
- Ice Climbers - Super Smash Bros. Ultimate (VG)
- Ice Climbers - Super Smash Brothers Melee (VG)
- Iria Silvestoli - Star Ocean: First Departure (VG)
- Juana Olsys - Atelier Meruru: The Alchmist of Arland 3 (VG)
- Jun Sakurada - Rozen Maiden (Drama CD)
- Kaede Orikura - Otome wa Boku ni Koishiteru (Drama CD)
- Kat - Gravity Daze/Gravity Rush (VG)
- Kat - Playstation All-Stars Battle Royale (VG)
- Leslie Newman - Trauma Center: New Blood (VG)
- Lushean Bronx - Summon Night 4 (VG)
- Lydie Erlanger - Castlevania: Harmony of Dissonance (VG)
- Misaki Ayuzawa - Kaichou wa Maid-sama (Drama CD)
- Misaki - Kaichou wa Maid-sama (Drama CD)
- Misasagi Inori - Memories Off (VG)
- Nancy Callahan - Sin City (Japanese dub)
- Natsumi Raimon - Inazuma Eleven 2 (VG)
- Natsumi Raimon - Inazuma Eleven 3 (VG)
- Natsumi Raimon - Inazuma Eleven Strikers (VG)
- Natsumi Raimon - Inazuma Eleven (VG)
- Ohatsu - Shin Onimusha: Dawn of Dreams (VG)
- Otoha Kijimiya - Hayate x Blade (Drama CD)
- Pai - .hack//G.U. (VG)
- Pi - .hack//Link (VG)
- Rahzel - Hatenkou Yuugi (Drama CD)
- Ridley Timberlake - Radiata Stories (VG)
- Riiko Izawa -Zettai Kareshi (Drama CD)
- Rimu Nanakaze - Inazuma Eleven Strikers (VG)
- Sakura - Goddess of Victory: Nikke (VG)
- Samantha Puckett in iCarly (Japanese dub)
- Seong Mi-na - Soul Calibur IV (VG)
- Seong Mi-na - Soul Calibur: Broken Destiny (VG)
- Snow White/Mary Margaret Blanchard - Once Upon a Time (Japanese dub)
- Tighanri - Genshin Impact (VG)
- Tsukishi Ootani - Inazuma Eleven Strikers (VG)
- Vent and Aile - Rockman ZX (VG)
- White Alien Ranger - Power Rangers in Space (TV series)
- Wilhelm - Breath of Fire 6 (VG)
- Will of the Book of Darkness - Magical Girl Lyrical Nanoha A's Sound Stage 02 (Drama CD)
- Yuki Hirasaka - 7'scarlet (VG)

Sequel of Mahou Shoujo Lyrical Nanoha The Movie 1st.

A manga adaptation of a thirteen episode sequel to Magical Girl Lyrical Nanoha, a magical girl alternate universe spinoff of the Triangle Heart series of games and OAVs.

The story appears to be centered on the investigation of the Book of the Silver Cross, an ancient Belkan magical tome. Tohma Avenir, whilst traveling, discovers a girl named Lily Strosek trapped inside a construct. When rescuing her, she gives Tohma an amulet that gives him access to a new Device power. However, unbeknown to them, there is another with a similar Device causing massive damage and injury, leading to an investigation by the Time Space Administration Bureau.

Set in a world parallel to other continuities.<br><br>
Summer 2010: a strange researcher from a suburban city developed a total-immersion virtual reality game that would sweep the world. The game is called "Brave Duel", a motion-sensing simulation card game with team battles. This is a story of a girl whose fate leads her to meet many rivals, compete with them and grow from the experience. Their summer is about to start!

A picture drama released on the BD Box Set of Mahou Shoujo Lyrical Nanoha A's. Subaru, Teana, Vivio host a radio show promoting their own BD Box Sets. This episode is the continuation of the Iryou Shoujo Medical Shamal picture drama episode that was included on the Mahou Shoujo Lyrical Nanoha: The Movie 2nd A's BD release.