FL in a parallel universe
MC reincarnates in another time or is reborn to repeat their life again
reincarnates in another time
main character is established in his/her field, or is working towards success
established in their field
badass power couple or soft healthy couple
badass power couple
FL going back into time or ML going back into time
ML going back in time
One main character going back in time, or more than one?
One main character going back in time
Rich ML or Poor ML
rich ML
(modern day dramas focusing on a family): middle class or wealthy
wealthy
flirty ml or flirty fl
Flirty FL (It is rare to see a fun and flirty combo)
ML or FL time travels into the past
FL time travels into the past
main character is raising a child/children (biological offspring), or main character is raising a child/children (may be child of a relative, or not related by blood)
Second option
male lead is too smart or female lead is too smart
ml too smart
thriller with a hint of romance or romance with a hint of mystery
thriller with a hint of romance
ML or FL has a "birth secret" of which they are unaware. Typically this indicates a child secretly raised by a family other than his/her birth family.
ML has birth secret
genre: music or sport
Genre: Sport
Tragic Past or Childhood Friends