Both male leads are your typical underdogs who go through intense training to become the best fighters they can be.

Main leads encounter fate when they meet under unfavorable circumstances. Unexpectedly, the leads have a deeper connection than anyone would have guessed.

The main leads come together due to fate and unlikely circumstances. But their past prevented them from seeing each other sooner.

A misunderstood manager and subordinate fall in love. The manager becomes a better person; character growth.

A misunderstood boss falls in love with a subordinate who brings out the best sides of him and seems to understand him the most.

The song "Yumeji's Theme" by Shigeru Umebayashi that's featured predominantly in "In the Mood for Love" plays at one point in "Lock Me Up, Tie Him Down". Main leads find solace in each despite one of them being married.

A woman who loves her husband dearly but due to unforeseen circumstances forms an odd relationship with a stranger (another man).

Both stories involve an unwanted guest wanting to occupy one's house for their own purpose, no matter how ridiculous and contrived.