Nan Yue was only in transit in the Kingdom of Elven. But she found that she signed a marriage contract with Ah Sha, the elven princess. Wait, I am a girl! How could I marry the princess? Wait, why am I wanted by the world after I sign the marriage contract?? To survive, I have to take the princess for a leap of faith:

"As expected of an uptown girl, you are pretty hot!
"Get lost, you perv!"!

(Source: Bilibili Comics)

Note: Chapter count includes 20 bonus chapters