Admired by everyone for his powerful, flawless physique, Grand Duke Calix Winter seems to have everything a man could want. But he harbors a secret he could never reveal to anyone... an inverted nipple! No matter how hard he works out to build massive pectorals, he can't seem to draw out the indented center. Seeing his distress, Emilia, a clever maid who accidentally stumbles upon his secret, steps up to offer an unconventional solution.

"Do not worry, Your Grace! I will definitely help you overcome your complex...!"