A female protagonist is expected to be pure of heart, good-natured, and, above all, beautiful. Satoki Houma has come to terms with the fact that she will never fit that mold. In a strange turn of events, Satoki and her classmate, Haruka Toudou, are pulled into another universe. The inhabitants of this new world are searching for their savior: the "Holy Maiden," an otherworldly woman with extraordinary powers. Although both were summoned, Haruka’s beauty leads everyone to assume she is the true heroine. Unbeknownst to them, Haruka does not possess the Holy Maiden's powers, but Satoki chooses not to shatter the illusion. Satoki is content to remain a bystander, hiding the truth from everyone—even Haruka. Convinced she is unworthy, Satoki will do whatever is necessary to ensure Haruka appears to be the savior the world has always desired.