The film follows Koyomi Hidaka and Shiori Satō falling in love with each other, but their parents' remarriage has led them to elope to a parallel world where they are not stepsiblings.
The film follows Koyomi Hidaka and Shiori Satō falling in love with each other, but their parents' remarriage has led them to elope to a parallel world where they are not stepsiblings.