Both have the similar theme based on gaming and have virtual personas of the ML and FL leads have marriage in virtual world.

Both dramas have the female lead devastated by the betrayal of her boyfriend loses memory meeting the male lead who is heart broken because of his own love.

Both dramas are about crown princess of a neighboring country coming to Thailand and is in danger. They are assigned to be protected by the male leads. Both dramas involves the question whether a commoner and a princess can be together?

Both deal with the aftermath of two best friends waking up together after a night of drinking and finding themselves naked.

Both are period dramas and has a mix of romance and war.In both dramas male lead knew the FL as a young girl and falls in love with her after being apart for years.

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.

Both have the same concept of a female lead asked by male lead's parents to straighten their playboy son.

Both are about the cases of a criminal psychology professor from Maryland trying to catch criminals by understanding their minds.

In both dramas the ML's father makes a engagement with his friends's daughter and lose touch for years. Years later when the ML's parent ask for marriage the girl's side substitute their daughter with an adopted girl who is their servant.

Both dramas deals with how the FL's friend/relative have affair with the ML and destroys the marriage. The ML in both dramas are acted by the same actor. Although the concept is the same, the way the FL deals with it is completely different.

Both have the same concept of a married couple and how the wife's best friend comes in between them destroying the marriage.

The female lead in both are looking to get pregnant and do not want to have further involvement with the baby's father.