While paying respects at their parents' grave, Yuto Takamine and his sister-in-law Kaori are unexpectedly whisked away to the mystical realm of Phantasmagoria. With Kaori held captive by the King and a mysterious woman named Restina, Yuto is tasked with battling their adversaries using the enchanted sword, Motomeh, to safeguard the kingdom from malevolent spirits. Only by aiding in the defense of Phantasmagoria can Yuto secure Kaori's freedom, setting him off on a perilous and transformative quest.