How To Heal A Sick Childhood Friend

After graduating from the academy, Lien was living a perfectly ordinary life when, one day, sudden news reached her. Dian—the sole heir to the kingdom’s only dukedom and her childhood friend—had fallen ill with a mysterious disease. In search of a way to cure him, an oracle is brought forth from the Temple of Healing, but it reads: "For fifteen days, at every sunrise and sunset, he must partake of a maiden’s milk." "Is that even possible? Can a maiden produce milk?" "There is a magical potion; if she takes it, it becomes possible." Wait, does that mean Dian has to... directly suckle from another woman's breast? What is this? Why does my chest feel so tight? "Are they looking for a volunteer—" "I’ll do it. Um... but... you know. I don't have any experience." Original Webtoon: Ridibooks, Bomtoon, Lezhin, Naver Series, MrBlue, BookCube, Aladin, KyoboBook, Yes24