Both have lord-servant/collegue relationships. ML both stone, and FL were both kinds of eccentric.

I like the FL in UTP more because of how brave her personality is. CC's Fl was timid but not bad.

Both hide their identity as assassins at each other. Both MCs fought for justice and evil.

Both married each other without knowing their identity. Both happy ending hihihi

Actually they're kinda different. The only thing they share was switching. In TSP, soul. While in AFS, their face only. TSP is more comical than AFS but the latter had a wholesome plot.

Both FL disguised as fake princess.

In PMW, she was ordered to do so in exchange for her freedom. Same with FP however, she was a thief.

The difference in how they execute it was in PMW, she was a master in disguise. While at the other, she looks like the Princess

Both FL were thieves and tried to steal from the ML.

In Practice Daughter, she wants something from him that's why she stayed

In IDWTBP, the FL was forced to be the wife and accompany him

Both FL swap soul

in Practice Daughter, 2 bodies were involved and they swapped

while in ETL, they share a body and swap personality

Both FL were accidentally intertwined with the ML and boom, fate was initiated!

Both ML were kinda of scheming too. These couples is combo to the maximum!

Both FL are eccentric and funny. But Hua Rong sometimes dresses like a man to go badass but Yan never does that yet always acts with her heart and spreads baddassness.

But I like the behavior of HT more than the latter but they have different antics so it's nice nice.

Both ML have brothers.

ML in HT is calm and considerate. The ideal and caring guy. Hmmm if you analyze the ML in TRHR, I think he's like this too. The difference was he teased the FL at first.

Both ML were portrayed as villains at first but their characters developed and were understood by the FL

Both FL were quirky and humorous

This was more realization to FL behaviour

Both have strong personalities and are humorous.

Has comedy yet there's still a content.

Both FL know how to fight and smart
Both duos were perfect for each other!

Under the power: She loves money and food
Girl like me: She loves nice things

Personally, I like the couple in under the power because the couple fight back to back and no revenge really happened *which similar to girl like me

FL both fearless and had a temper

ML were not similar yet both plots mostly surrounded by resolving ML's dilemma