both dramas are about revenge, casino,gambling.
In both dramas the leads fall in love through revenge and staying together.
In both dramas the male lead's dads are cheated and the male leads grow up orphans.
In both dramas there is pregnancy.
In both dramas the male leads get wealth through being a croupier in a casino .
In both dramas the male lead hates the female lead and her father so much

they are both about revenge.
The only difference is that RLSL is about revenge on the kids of the man that raped his mum and later lead to the death of both the ML's parents while SSK is about revenge on the lady that caused the accident that lead his wife GANOK to die .
In both dramas the ML falls in love with the FL at the end of the drama.
Both dramas are about RAPE
Both dramas have forced love,forced kiss,kiss and slap

Both are about a person coming from the jungle or forest to live in the city the difference is KKD is thai and MMB is chinese

Both dramas are after betrayal (the main female lead betrays the main male lead because of a misunderstanding)and many misunderstandings between the main leads thinking they are both in love with their rivals .both dramas have employee and employer relationships.both dramas have clingy 2nd female lead

Its slightly the same .
The female lead in the beauty inside changes to a different body and new identity for one week a month while the female lead in only kiss without love changes whenever she is kissed by any mammal.but the similarity is the change of bodies in both series
Both dramas are dealing with contract relationships
Both dramas have rich male leads.

In both dramas the male lead disappears at the end of the drama,in both dramas the male lead is not a human.in Angel's last mission the male lead is an angel while in my love from another star the male lead is an alien .
In both dramas the male lead protects the female lead from her enemies
In both dramas the female lead is a celebrity. The female lead in Angel's last mission is a ballerina while the female lead in my love from the star is a movie star
Both dramas their love starts with hate to love
Both dramas the male leads first become personal helpers to the female lead.in Angel's last mission the male lead was his secretary while in my love from the star the male lead was her manager

Both have rich Male lead ,poor female lead
Rich man/poor woman
Man chases woman first
Both have a childhood sweet heart whose like a family friend that admires the male lead
Both male leads are bosses to the female leads