The Guardian | Holy Spirit | Spirit of St. Louis | Spirit | Blind Guardian | Smells Like Teen Spirit | Guardian Council | spirit | Office of the Public Guardian | Chinese guardian lions | Spirit of the West | The Guardian (TV series) | Independent Spirit Awards | The Spirit Level: Why More Equal Societies Almost Always Do Better | the Guardian | Spirit (band) | Delta Spirit | The Guardian (2006 film) | Spirit Warrior | Spirit of Tasmania | Legal guardian | International Wine and Spirit Competition | Wandering Spirit | The Duke Spirit | Spirit West Coast | Spirit possession | Spirit of Eden | Spirit Airlines | Spirit AeroSystems | San Francisco Bay Guardian |
The first novel in the series, Guardian of the Spirit, has been adapted into numerous media, including a radio drama, manga series, and an anime adaption.
The double A-side single features the song "Nexus 4" which was used in a commercial for the Subaru Legacy and the song "Shine" which was used as the opening song for the NHK anime series Guardian of the Spirit.