<p>In a demon-haunted world following nuclear Armageddon, the devil summoner Raishin chances upon three children. After saving them on a whim, he asks what hopes they have for their future. Jack desires strength. Jin seeks to emulate Raishin. Ayame wishes for an end to conflict then asks what Raishin hopes for. Raishin answers he wants just one thing, to reclaim a paradise lost, to find Eden.</p>