Haruka Tomatsu
Five pieces of theme music are used for this series. The first opening theme is "Ignite" performed by Eir Aoi. The first ending theme is "Startear" performed by Luna Haruna. Since the "Calibur" arc, the second opening theme is "Courage", which is performed by Asuna Yuuki's voice actress, Haruka Tomatsu, while the second ending theme is "No More Time Machine", which is performed by LiSA, and the third ending theme is "Shirushi", also sung by LiSA.