I'm sorry, I'm not very familiar with the specific 'ek hasina thi' story. It might be a story from a particular region, culture or media that I don't have enough information about.
Sadly, without more knowledge about the 'Star Plus Serial Ek Hasina Thi Story', I can't give you the specific main characters. But in a general sense, in a story of this nature, the main character is likely to be a woman with a complex personality. There may be a male lead who has a love - hate relationship with her. And there would probably be other characters like a scheming relative or a helpful friend that add depth to the story.
I really don't have the details of the 'ek hasina thi' full story. But generally, in a story, there are elements like characters, a setting, and a plot. If Hasina is the main character in this story, her personality, her relationships with others, and the events that she experiences would form the full story. It could be a story of self - discovery, where she learns about herself through the situations she encounters.
I'm not very familiar with the specific 'Ek Hasina Thi' story on Star Plus. But generally, Star Plus shows are known for their dramatic storylines, strong characters, and family - centered plots. Maybe it's a story about love, revenge, or family relationships.
I'm sorry, I'm not familiar with the specific 'ek thi rani ek tha ravan' story. It could be a relatively unknown or regional story. Maybe it's about a queen and a demon - like character, but without more context, it's hard to tell the full story.
I'm sorry, I'm not very familiar with the specific story named 'ek haseena thi ek deewana tha'. It could be a story from a particular movie, book or regional folklore. Maybe it's about a beautiful woman (ek haseena) and a passionate lover (ek deewana). But without more context, it's hard to tell the full story.
A third possible theme could be about self - discovery. Through her encounters with the ravan, the rani may learn more about herself, her capabilities, and her place in the world. Also, there could be a theme of sacrifice, where she might have to give up something important in order to overcome the ravan or protect her people.
It could be that the 'haseena' has some sort of mystery around her. And the 'deewana' is drawn to this mystery as much as her beauty. The main plot would then be the deewana trying to unravel the mystery while also winning her heart.
As I don't know the details of 'ek thi marium real story', I can't determine its significance. It could be significant to the people directly involved in the story or to a particular community.