Lu Han is a self-proclaimed Cupid. After successfully bringing together a couple, he took it upon himself to find a girlfriend for his best friend, Minseok, before the latter grew too old and had to live forever alone.

Lu Han thought he was successful. After all, Minseok had proposed to the girl only three months after courting her, and they had held a whirlwind wedding in the middle of a forest in the happiest state Lu Han had ever seen them in. 

But the temporary success quickly turned into disaster when Minseok's wife disappeared after they had a nasty argument, and being forced to keep up an image for the arrival of someone who must never know what happened, the abandoned husband asked Lu Han for a serious favor. 

"Please just pretend to be my wife until I can find her." 

"No one, I repeat, no one, must ever hear of this."

Things were about to get a whole lot more complicated. 

Spin-off to: Mistaken for a Boy

(Reading MfaB is not required to understand this fic, although highly recommended)

Genderbender in the sense that Lu Han will have to act as a girl. He doesn't actually switch genders. No is involved.