Glory Jane

The same concept where both heroines suffer the same fate, also in both dramas the 3 main leads meet each other in their childhood and their love interest starts there... both have greed, evil doings, kidnap, murder, revenge, love triangle, dreams to fulfill, family ties...etc. if you loved one of them then you'll surely love the other one too.
But to me May Queen is by far a better melodrama and a MUST watch !!

The stories are the same in so many ways.
Both are about CEOs and their dirty plots.
Leads suffer from Amnesia.

although one is set in a university and the other in adulthood the feel is the same. the is a charter in both that is the youngest son of a conglomerate and is abused by his father.

Aside from the first 4 episodes of Monster, they're pretty much the same: two guys competing against each other, one being the illegitimate child of the company head, and of course one girl both are interested in.