Giant Monster Battle: The Devil’s Advent

Twenty years ago, the cosmic demon Belyudra descended upon Earth. Humanity was defeated in the war, and the global population fell to one billion. The survivors struggled to get by in cities on the fringes, relying on “Monster People,” who possess monster factors, to fend off invasions by all kinds of monsters.

Shinto Akane, a Reionics girl from another universe, washed up in this world three years ago. With her ability to control monsters, can she help humanity break out of its predicament?