He lived a quiet life.
A part-time job, peaceful nights, and cheering for his favorite football team.

That is—until he accidentally stumbled into a portal to the Astral Realm, activated a strange glowing system, rescued a Dragon Princess, and somehow brought her back to his world.
Now she’s sleeping in his bed… and calling him her Keeper.

Bound by the mysterious SigilBound System, Akira Moriya becomes a human capable of forging soul contracts with otherworldly girls known as Astralkin—ethereal beings born from dreams and emotions.

But there’s a twist—
the stronger their bond, the greater his power… and intimacy plays a big part in it!!

Between daily life, soft ecchi moments, and heart-throbbing missions across Earth and dreamlike realms, Akira’s quiet apartment soon turns into a refuge for beautiful Astralkin girls—each with their own charm, secrets, and growing affection for him.

Welcome to the world of Astralkin.