I'll Never Be Your Crown Princess! (Manga) Vol. 2

"To escape her engagement to the Crown Prince, Liddy decides she has no choice but to lose her virginity, and fast! But in her haste, she makes a terrible mistake. It turns out the man she slept with at the Masquerade Ball is none other than the prince himself! Not only that, but he's left his mark on her, literally, and it's impossible to erase. Just how will Liddy get out of this mess?"--