The younger sister, who had been engaged since childhood and was about to get married, suddenly disappeared. To save face with their future in-laws, the family dressed their own son up as his sister's bride and sent him to the other family's home. The wedding was lavish and grand, but the groom was deeply unhappy. [I'm a proper man. Why am I the one getting married...? Well, for the honor of the family, I'll just have to bear this humiliation once.]
But if he had to get married, why did his fiancé look like he already knew everything? He felt like he'd been dragged into some kind of "conspiracy"...
They were living under the same roof, so of course something was bound to happen. But the thought of someone younger than him being on top of him was so annoying.
