Fairy Tail: 100 Years Quest, Volume 10 (Fairy Tail: 100 Years Quest #82-90)

SHADOWS OF THE PAST ? Erza Scarlet is the most kick-butt woman wizard in Fairy Tail, but in the past this indomitable fighter was... a slave? Now she finds out hat her old companions have completed the evil device they were forced to build while held in slavery: the Tower of Heaven. What's more, their wicked master requires a sacrifice: Erza! Includes special extras after the story!