How to Heal a Sick Childhood Friend

One day, sudden news reaches Lien, who had been living an ordinary life after graduating from the Academy. It is that Dian, her childhood friend and the heir to the Duke's family—the kingdom's only one—has contracted an unknown illness. To find a way to cure him, she obtains an oracle from the Temple of Healing, but: "For fifteen days, take a virgin's milk when the sun rises and sets." "Is this possible? Can a virgin produce milk?" "There is a magic potion; they say it is possible if you take it." So, does that mean Dian has to suck on another woman's breasts himself? What... why does my chest feel so tight? "We are looking for a volunteer..." "I'll do it. I... uh... what do you call it. I have no experience."