main cast ;
Rohit Sharma : cbi officer,
best friend of karan and Hardik
for him his work come first ,
Elder brother of shubman love him the most
Orphan ,
Love interest of varsha

Karan kundra : cbi officer ,
Best friend of rohit and Hardik
Aggressive but sweet for his loved ones
Orphan ,
Love interest of tejasswi

Shubman Sharma : younger brother of Rohit ,
Loved his bhaiya can do anything for him,
College boy ,
Bff of Abhishek and Rishabh 

Varsha singhania : doctor ( cardiologist)
Twin sister of tejasswi and elder sister of bhumika
Daughter of naitik and Akshara
She is angry young girl
Love her sisters to the most
Love interest of Rohit

Tejasswi singhania : doctor ( neurologist)
Twin sister of Varsha and elder sister of bhumika  
Second child of abhigya ( 5 mints younger than Varsha )
She is calm and sweet
Love her sister
Love interest of karan

Bhumika singhania (Bhumika_77 I am taking u here I hope u don't mind sis ) : college girl ,
Younger sister of tejasswi and Varsha ,
Third child of naitik and Akshara ,
She is the copy of her both sisters ,
Love interest of shubman

Other cast ;
Mahendra singh Dhoni : chief
Treat his colleagues as his family
Husband of Sakshi
Father of ziva
Best friend of Naitik

Naitik singhania : businessman,
Husband of Akshara
Father of varsha, tejasswi and bhumika
Love his daughters very much
Best friend of Mahendra singh Dhoni
Elder brother of tanu 

Akshara singhania : house wife
Wife of naitik singhania
Mother of varsha, tejasswi and bhumika
Love her daughters equally
Don't like tanu

Tanu mehra  : businesswomen
Younger sister of naitik 
Buji of varsha, tejasswi and bhumika  ( but don't like them becose they r Akshara  daughters also )
Hate Akshara ,
Mother of Rhea,
Husband is dead so she live with singhanias

Rhea mehra :daughter of tanu ,
Hate singhania sisters ,
College girl ,
Has a crush on shubman want him at Any cost .

Main couples are :
Tejran : (tejasswi+ Karan )
Varshit : ( Varsha + Rohit )
Shumika : ( shubman + bhumika )

This story is totally on my imagination so pls read ur own risk.....