Fall in Love (2011)

The dramas have a very similar part. The characters both play the same roles. It's a story about a brother and sister that have a really close relationship but is separated from each other after they found out the female lead is not his real sister. They meet after 10 years as soon fall in love.

both tell a story about the childrens who were switched at birth

They both have girls switched at birth. One was raised in a wealthy family well the other was raised in a poor family.

Melodramatic
Another heartbreaking love story
A happy ending
A drama that makes you believe in true love

Melodramatic
Another heartbreaking love story
A very sad love story
All about true love