Shura Kirigakure has always been one of Rin and Yukio's most trusted friends and mentors, but her past is a mystery. When Shura suddenly goes missing, Mephisto sends Rin and Yukio to the wintry north to find her. The journey is a chance for the brothers to talk over recent events, and try to sort out where things stand between them. Out in the frozen countryside, Shura reaches her destination, and a meeting with an entity who will impose an ancient curse upon her...

Reads from right to left. Translation of: Ao no ekusoshisuto. 17