Arata: The Legend Vol. 20 (manga)

Arata and Hinohara finally manage to bring each other fully up to date on what's happening in the worlds 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!