The series takes place four years after the events of Mahou Shoujo Lyrical Nanoha StrikerS, during which Nanoha Takamachi rescued and adopted a young girl named Vivio, who is the reincarnation of the Sankt Kaiser, Olivie Segbrecht. After entering her fourth year of elementary school, Vivio is given her own intelligence device, Sacred Heart, and gains the power to transform using her adult Sankt Kaiser mode. She soon comes across a girl named Einhart Stratos who, similar to Vivio, is the descendant of another Sankt Kaiser ruler, Claus G.S. Ingvalt. As Einhart becomes determined to prove her fighting style is the strongest, Vivio befriends her and, together with her friends, enters a martial arts tournament where they fight against various opponents and learn more about their past lives. **Included one-shot:** Volume 2: 5th Anniversary Collaboration Comic: Fate/stay night x Mahou Shoujo Lyrical Nanoha

Republic of Biscotti faces a predicament by the invasion of Galette Leo Knights. In order to save the country, Princess Milchore summons a "hero" from the outer world. Shinku, a junior high school boy living in the Earth, is chosen as the hero. Serialization in multiple magazines by Kadokawa Shoten.

Adaptation of the 1st movie of Nanoha.

Chapters 1-3 are the events that occurred between the end of A's and the start of StrikerS. Chapters 4-12 are side stories about the characters. Chapters 13 & 14 are the events that occurred after the end of StrikerS. Chapter 15 is a special from Megami September 2009 (also events after the end of StrikerS).

The story line follows Nanoha Takamachi, an everyday nine-year-old Japanese girl. Nanoha's regular everyday life ends when she rescues an injured ferret who reveals himself as a young shapeshifting mage named Yuuno Scrya. An archaeologist from a parallel universe, Yuuno came to Earth to collect a set of twenty-one dangerous ancient artifacts named the "Jewel Seeds" that he first discovered in his own world. Jewel Seeds give living beings who come into contact with them unnatural powers, often turning them into monsters, and Yuuno, injured while trying to collect them, must now rely on Nanoha while he convalesces in ferret form. (Source: Wikipedia)

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. 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 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.

Sequel of Mahou Shoujo Lyrical Nanoha Innocent with Subaru and Teana as main characters.

4-koma of Mahou Shoujo Lyrical Nanoha Vivid.

A crossover manga of Fate/Stay Night and Magical Girl Lyrical Nanoha A's.

A completely original new manga announced for the series' 20th anniversary.