Left-Handed Wife (2019)

The male lead also got amnesia after getting plastic surgery and changed his identity, both of them took a while to remember their original self
Kim Sung Ho and Son Joong Ki characters are a bit similar

- Both are crack-addictive makjang dramas with over-the-top/persistent villains and family mysteries/pasts
- The female leads are naive and trusting of villains at first but they both become stronger characters later
- Both male leads have a transformation in looks (one would be from weight loss but the other is plastic surgery) and are given a new identity
- There is little romance in both but the scenes are satisfying to watch
- Both male villains (Lee Hyuk, Kim Nam Joon) are obsessed with the female leads
- Some characters and situations are somewhat similar in a way (but may be spoilers listing them)
- Both dramas have kind-hearted grandmas

Both explore obsessive love, marriage, loyalty, friendship, betrayal and infidelity. Love Twist strikes me as looking to be a little more nuanced with it's villainous characters; and also created in me a greater level of discomfort offending my sensibilities.

The two main characters, (thai drama is the main female character and in the kdrama this is the main male character who are the victim)
lost their memory following an accident, they were subjected to plastic surgery and change their identity for financial interests. But their relatives suspect a few things and they will do everything to find out the truth.
These dramas are about love and money