Come! Jang Bo Ri (2014)

Both dramas have a woman taking care of a child who is not her own and harassed by the biological mum.

Similar story family drama, one female is nice and all about love, justice etc and another female is extreme ambition, jealousy, hate etc. Their paths cross and one begins to take things away from the other with lies,deceit and all other cliched stuff.

Both are 50 episode dramas with the same female antagonist Lee Yoo Ri

Both villains Min Jung and Yoo Ra grew up in a poor family and are greedy for wealth/status, and their moms also help them with their lies. Both FLs raises the baby that they abandoned so they could marry a rich guy. The ML in A Man in a Veil is similar to Ji Sang's character, he wants revenge since Yoo Ra caused his mom's death and Min Jung caused JS' dad to die. Min Jung and Yoo Ra blackmails the villain moms with their secrets from the past later on.

Written my the same writer.
Also the same type of theme with the main lead having her identity taken by someone close to her.

I recommend this both drama because , Male lead and Female lead
try to solve problem
In one drama explosion and another student murder/suicide