both male lead treats his patients with full devotion and without discrimination. However, his medical license gets suspended as a result of a medical malpractice incident . so how he will be come back its interesting to watch

Both male lead are god from sea/water in human realms their trusted servant live from generations both male lead comes human world to find out precious thing and encounter female lead for whom they fall in love as times goes both male lead found some how female lead life at stake on consequence of male lead mission

Note : "starry night starry sea" is better one

both ML fall for FL but not mention it cherish her with cold attitude
contract relation and cohabition concept

note :- well intended love is better

Main lead find out disease in sec without any test by analyzing symptoms
main lead has failed past
main lead confident about their treatment theory on patients that'swhy they don't listen anyone only follow their instincts

both drama portray story of twin sister one loved by all and other is affected/jealous of it. which cause sisters became enemy (sisnemy) .present past time line presented (incarnation ) .love matters between sisters

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

same theme modern girl soul switch to a body and marry prince how their relation develop its interesting to watch

not similar in term of era and concept the only similarity is one of the main lead is cure for other

"""""""""""""""""heart desire play with fire beyond right or wrong""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

not completely at some term they are similar
*marriage is arrange of main lead for some hideous purpose, FL is force to ML
*one of the main lead is poisoned
*one of the main lead is cure of another main lead
*one of the ML hide his true identity when time comes he take throne for revenge
*LoYX is love triangle, while PS is reverse harem

both dramas FL is smart enough to deal with political issues and warrior/fighter when needed , she is center of attraction of all ML in not only romance for strategies issue also , she faces amenesia

princess agent is by far better than anything else

both male lead are owner of hotel/restaurant and female lead used to work their as an employee for some reason they get in pretended relationship, both drama have child involvement also