La Ong Dao (2017)

Similar:
- ML had a bad impression of FL at first but eventually falls for FL after meeting her again.
- ML and FL are stubborn and deny their feelings for each other
- FL wins the heart of the ML with her kindness
- Arrogant ML who later regrets the things he said about FL

Different:
- In LOD there is arrange marriage situation and FL was thought to be an orphan
- In NNS, ML is actively pursuing FL while in LOD ML is silently trying to pursue FL

similar plot. ML is coming back from a foreign country after finishing the study. FL is someone who grew up in the same house and later, fall in love with ML.

similarities-------:

*rich Male lead have girl in his heart
*all is going well until he find out his family inheritance somehow will go to FL,
*both FL are adopted
*unexpectedly secret come to ML that FL are princess

difference--------:

LOD -has prideful(in right manner) self respect introvert FL. ML obsessed. historical

MP- has funny cheerful let go things FL. obsession is part of love but not in controlled way. modern era

note: my princess is much better

Both are period dramas where male lead who is educated abroad comes back with a girlfriend and his father leaves a will asking the male lead to marry the female lead who is his step sister/adopted sister.In both dramas male leads go from vehemently opposing to the marriage to literally begging the female lead to marry them.

Similarities:
- ML tries to be an older brother figure but eventually falls for FL
- FL comes from royalty background
- Similar time period

Differences:
- LOD has marriage as inheritance condition
- In Massaya, romance is lighter and pace is faster than LOD

Both have
1. Calm, intelligent and gorgeous Female Lead
2. Selfish, arrogant, possessive and handsome Male Lead
3. Super tricky, possessive and beautiful Female Villain
4. Adorable male and female Friends

In both drama, the main Male Lead is Akkaphan Namart. And the Main Female Leads in the Both drama are very capably intelligent and beautiful.