"I'm breaking off my engagement with you!" The crown prince throws this line at the young villainess Sylvie at the school graduation ceremony. Smiling with satisfaction, she answers, "Yes! I gladly accept!" She stands accused of bullying the prince's lover, but she debunks the allegation with a brilliant alibi: "I was digging radishes in the dungeon." With the fees she has collected and her S-class adventurer's license in hand, Sylvie moves comfortably to a farm. Sylvie is ready to start living the slow life she has dreamed of for so long! But then, the second prince, the younger brother of her ex-fiancé, arrives on the scene!? It seems that he sees Sylvie as a dangerous person who threatens the royal family, and he often stays in her house under the pretext of keeping an eye on her!?
