Nirvana in Fire and Money Flower are revenge dramas in which the plot is controlled by the main leads under the guise of an alternate identity. They are both highly intelligent so they rarely make any mistakes and control almost everyone around them like chess pieces.

The relationship between Ji Chang Wook and Song Yoon Ah (Madame) in the K2, is very similar to the relationship between Jang Hyuk and Lee Mi Sook in Money Flower. Even though Ji Chang Wook is my favorite actor and while the action in the K2 was great, overall Money Flower is a better drama.

It displays romance between a male human and a female cyborg/robot. Borg Mom has more comedy while Bong Soon has more romance.

The general story is the same but it was done completely different. They both had aspects that I liked and disliked but I preferred the style of My Amazing Boyfriend better. Essentially if you liked one you should like the other.

Solving crime through time, the only exception is in "To Get Unstuck in Time" the son is contacting his father 20 years in the past.