Magical Girl Lyrical Nanoha ViVid

Magical Girl Lyrical Nanoha ViVid (魔法少女リリカルなのはViVid) is a manga that takes place four years after Magical Girl Lyrical Nanoha StrikerS, and follows the adventures of Vivio Takamachi. As Vivio enters the fourth grade, she receives her own Device, Sacred Heart, and simultaneously becomes a target of a mysterious fighter claiming the name of an ancient Belkan ruler, Heidi E. S. Ingvalt. ViVid is chronologically fifth entry in the main Nanoha continuity.