Ruri-iro Princess

Ruri, a typical high school student, finds her life upended when assassins sent by Princess Leila target her, drawing her into a conflict concerning the Pulsean Moon's destiny. During the attack, Ruri's lover, Toru, is wounded while protecting her. Driven by a desire to save him, Ruri is forced to abandon her life in the real world and journey to the Pulsean Moon. This journey is the only way she can hope to save Toru and confront the forces that threaten the moon's fate. The anime is based on the manga from Omajinai Comic by Mito Orihara, who also wrote the theme song.