Undead Unluck manga volume 9 features story and art by Yoshifumi Tozuka.

Fuuko surrenders herself to Under in exchange for them neutralizing Winter. With only one season UMA left to neutralize, both Under and the Union have their sights set on Spring. But first, the Union needs to figure out when Under plans to launch their attack so they can beat them to their target and rescue Fuuko in the process. Can Fuuko find a way to get Andy and the others the information they need?!

Undead Unluck manga volume 10 features story and art by Yoshifumi Tozuka.

Andy and the others head off to rescue Fuuko and slay Spring. Amidst a fierce battle between the Union and Under, Fuuko reaches the top of the tower alone. There, she tries to talk things out with Spring, but the UMA, bound by the will of God, challenges her to a three-round competition to decide the fate of the world!

Undead Unluck manga volume 11 features story and art by Yoshifumi Tozuka.

Fuuko has finally reached the top of the tower and has been plunged straight into a three-round competition with the fate of all at stake! The score is tied as she heads into the final bout. But just before the third and final game begins, God’s brainwashing drives Spring to enter his ultimate form!