Just from the first episode i can tell its a remix of the kdrama One spring night

1. Male leads =>
Both have Medical related jobs
Both have unclear or unfavorable marital status
Both stay in the same apartment as the female lead's female friend

2. Female leads =>
Both are in a state relationship with their boyfriend's
Both are having marriage thoughts
Both don't have the approval of the partner's father
Both meet the male lead for the first time after a drunk night at their female friends place

And this is just from ep1

But all in all the remix is quite nice so far, the spin they put on it is somewhat better than the original