Eien Labyrinth

 is the third single by Yuuki Aoi. It was released on November 1, 2017, and peaked at #12 on the Oricon single chart.

Single Information
Eien Labyrinth was used as the opening theme for the anime Boku no Kanojo ga Majime Sugiru Shojo Bitch na Ken.
 * Lyrics: Maruhashi Riko (1), OSTER project (2)
 * Composition: Maruhashi Riko (1), OSTER project (2)
 * Arrangement: Tak Miyazawa (1), OSTER project (2)

CD

 * 1) Eien Labyrinth (永遠ラビリンス)
 * 2) Hatsujouji Kake Love Game (ハツジョウジカケラブゲーム)
 * 3) Eien Labyrinth (永遠ラビリンス) (Instrumental)
 * 4) Hatsujouji Kake Love Game (ハツジョウジカケラブゲーム) (Instrumental)

Limited Edition DVD

 * 1) Eien Labyrinth (Music Video)
 * 2) Eien Labyrinth (Making)