Book 1

semelparous Vol. 1

by Jun Ogino

Published 14 December 2021
Within a walled city that separates our world from the kaiju trying to destroy it, humanity fights for survival in this intense new yuri series.

Ever since they were young girls, best friends Yorino and Haruka have been training to join the ranks of the Bulwarks—soldiers who defend humanity from the kaiju trying to break through. But when Haruka is killed during a routine drill, Yorino’s world is shattered. Will she ever be able to open her heart to another? Strap in for intense, apocalyptic romance!

Book 2

semelparous Vol. 2

by Jun Ogino

Published 22 February 2022
BLACK SOULS AND REVELATIONS

Yorino has learned the horrifying truth behind the kaiju—that every time she kills one, a human in her world dies. Instead of letting this discourage her, she’s vowed to end the otherworldly threat once and for all, so that Haruka’s death will mean something. Together with Youko, she will shoulder the Bulwarks’ secret sin. But even as Yorino’s new friendships begin to deepen, her battles with the kaiju grow more intense!

Book 3

semelparous Vol. 3

by Jun Ogino

Published 5 July 2022
WE FINISH TOGETHER

In order to break the cold chains of fate, Youko devises a plan to breach the Upper Wall and exterminate the enemy kaiju once and for all. To accomplish this, she’ll need Yorino, the last living pureblood Mure. Now joined in body and soul, these two young women vow to carve out a future together once their task is complete. But there are traitors among the Bulwarks!

Book 4

semelparous Vol. 4

by Jun Ogino

Published 30 December 2025
Within a walled city that separates our world from the kaiju trying to destroy it, humanity fights for survival in this intense new yuri series.

Ever since they were young girls, best friends Yorino and Haruka have been training to join the ranks of the Bulwarks—soldiers who defend humanity from the kaiju trying to break through. But when Haruka is killed during a routine drill, Yorino’s world is shattered. Will she ever be able to open her heart to another? Strap in for intense, apocalyptic romance!