Mahou Senki Lyrical Nanoha Force

Six years after the JS Incident, a young dimensional traveler Touma Avenir rescues a mysterious mute girl named Lily Strosek from a secret research facility on a distant world of Ruwella. However, by doing so, he becomes an unwitting accomplice in the Book of the Silver Cross Incident, the latest interdimensional crisis faced by the former Riot Force 6 members...