Both dramas are about sons/grandsons with different personalities and backgrounds living in the same house for the sake of inheritance/place of heir. Both involve romance whereas BSM is a more idol-kind of drama.

Both have male lead acted by the same actor and they both started out their own business and succeeded in the drama. They both have a birth secret and dated with the opposition of their parents. Do watch the drama for more.

In both dramas, the mother abandoned her daughter and prefer the child they brought up to her biological daughter. Both female leads decided to take revenge on their mothers. Romance involved.

Both dramas have female lead as teacher in the ancient academy, see how they manage the naughty students and how interesting they handle the lessons. Both have romance involved, also bickering otp at first. There are also cute supporting characters inside.

Both dramas have Eun Ji as the female lead and in high school setting. Romance involved.

In both dramas, the mother abandoned the daughter and remarried to a wealthy family after that.

Both main character matures a lot from the beginning till the end and they both tried to adapt in a place different from where they used to live in. Both talk about family-related matters and Gochisousan has more romance.

you might like to watch it for the main actor Jo Jung Suk singing in the other drama. (Another kind of personality)

both are based on novels from the same author Gu Man. One is more focused on the career and the other is more focused on their love and past.

both are based on novels from the same author Gu Man. One is more focused on campus love and interaction in online games whereas the other is more focused on their love and past.

both are based on novels from the same author Gu Man. One is more focused on campus love and interaction in online games whereas the other is more focused on the career and more.