Magical Girl Lyrical Nanoha StrikerS

Magical Girl Lyrical Nanoha StrikerS (魔法少女リリカルなのはStrikerS  Mahō Shōjo Ririkaru Nanoha Sutoraikāzu ) is a 26-episode anime that aired from April 1 to September 23, 2007. As the third entry in the main Nanoha continuity, it is the sequel to Magical Girl Lyrical Nanoha A's and takes place 4 years after its epilogue, itself set 6 years after the conclusion of the series. The series introduced a new "generation" of characters and shifted its focus from individual rivalries between the main characters to team-based battles and a more wide-ranging conspiracy.