The Revue of Astral Sins is the name of the tenth and final audition battle of the anime series.
Determined to bring Hikari Kagura out of the stage she chose for herself, Karen Aijo faces off against her in one final revue. Eventually, Hikari corners Karen before using her dagger to smash the button on Karen's cloak to bits. Despite being beaten, Karen's desire to return home with Hikari allows her to come back for an encore performance. Miraculously, Karen's determination and love for Hikari create the Promise Tower Bridge, which she uses to bring Hikari back to her senses. Then, two of them charge for one another, striking each others' cloaks and ending the Revue.