Shirayuki Seven

Ahiru is a high school girl whose life revolves around little boys, a passion that goes far beyond what most would call a simple interest. Although she denies being a shota-con, her friends know the truth. Her dream has always been to marry a young prince, and that dream seems to come true when a new student named Shirayuki transfers to her school.

The day after Shirayuki's arrival, strange phenomena strike the school. Ahiru falls ill with a fever and suddenly finds herself in an alternate dimension. When she opens the door to the infirmary, she sees Shirayuki sitting on a throne. She is told that she is to become the wife of the prince—the prince of the devil's world. Now Ahiru must navigate this bizarre new reality and face the truth behind her unexpected engagement.