Yamiru

In the midst of a world engulfed in crisis due to the presence of demons and with only a few cities left standing, the people are desperately seeking a way to reclaim their world. The Aegis Defense Agency emerges as a beacon of hope, offering a solution in the form of a system implant that allows individuals to fight back against the demonic threat. Despite the passage of several years, the demons continue to pose a significant danger to humanity.

In this delicate and perilous situation, we are introduced to Arihara Rin, a strategist belonging to Squad 14, the lowest rank among the defense forces. Unexpectedly, Arihara enters into a contract with a demon girl named Saya Hoshiko. This contract intertwines their destinies, and together.

As Arihara assumes the role of strategist, he must utilize his tactical expertise and strategic thinking to guide his squad in combat against the demonic forces. Saya Hoshiko, his contracted demon, becomes an invaluable ally with her unique abilities and powers.

Table of Black Contract

Table of contents

Volume 1