Lucifer's plans to merge Assiah and Gehenna are going very nicely, with the help of Shima, leader of the illuminati. Can Yukio, the Paladin, and Ryuji, who's locked in Gehenna, save Assiah? And will Rin, a demon from Gehenna, be an ally or a foe? Slight spoilers for the manga. Inspired from when Rin calls Bon "Princess Ryuji" in the Impure King Arc. RyujixRin and ShimaxYukio