Sister Versus Sweetheart! Just as Mushiki and Ruri start to settle into their normal routine again, their uncannily talented older sister, Madoka, decides to pay a sudden visit to the Garden! When pressed for the reason he transferred schools, Mushiki reveals hes fallen for someone. In order to convince his sister to accept his choice, however, he must introduce her to Saika Kuozaki. The next thing he knows, Mushiki is showing Madoka around Void Gardens annual school festival, where he manages to greet her in Saikas body...yet somehow, Madoka instantly sees through his disguise! To convince Madoka that Mushiki is telling the truth, Kuroe has no choice but to introduce herself as the real Saika. But Madokas standards are as stringent as they come, and theres only way shell accept her darling brothers future wife: trial by combat! Its the worlds strongest mage against the worlds most protective guardian, with marriage on the line!