Arata 20 - Yuu Watase

In a world where humans and gods coexist, Arata is a member of the important Hime clan. One day, he winds up switching places with Arata Hinohara, his counterpart in the modern world. As Arata of the Hime acclimates to the life of a high school student, Hinohara sets out on a life-changing journey in an unfamiliar land...

Arata and Hinohara finally manage to bring each other fully up to date on what's happening in the world's they've been switched between. They realize the potent Amatsuriki power of the Hime clan must be fully revived in their companions Oribe and Mikusa, two women who also seem to have been switched between the worlds, if they want a real chance to defeat their mutual enemies, the Six Sho. Arata and Oribe investigate possibilities on the internet, but what they discover might turn out to be too little, too late!