Miharu’s mother Haruko comes to tour her son’s company, where she meets Rudolph. Teppei suddenly appears and confronts Rudolph, using his Cupid's Arrow on Haruko and turning her into his ally! Teppei is acting under the suspicion that Rudolph is actually Miharu’s father, but is there more behind his heinous behaviour? The situation takes an even more chaotic turn when a giant mouse attacks! Get ready for a clash of emotions, epic battles, and more surprising twists of fate in the fifth volume of this exciting Christmas fantasy!!