[a] The series is published by Fujimi Shobo in Japan, and by Seven Seas Entertainment in the United States.

All this changes when a voluptuous girl with wings and taloned feet named Aero appears and calls on Eita to help save her people-the harpies of Re-Verse-from the merciless onslaught of giant robot monsters known as Gigas.

Eita will follow his newfound harpy friend into a whole new world, filled with monster girls and fantastical creatures beyond his wildest dreams.

Okayado launched the series in the June 2013 issue of Fujimi Shobo's shōnen manga magazine on May 9, 2013.

[9] On Anime News Network, Rebecca Silverman gave volume one an overall grade of C, calling the story generic and textbook.