Both love-hate relationships turned into steamy romances
One of leads has a severe illness in each of these dramas
MLs are rich

They are both noona romance that happens in the office area.
The vibes are really different, since Jdramas produce very straightforward and short dramas.
Both stories show challenges the couples face despite their age gap.

The leads are co workers
Noona romance
Both set in office environments and shows the relationships between the workers
Something in the rain has a little different vibe since they have ties from the beginning

Both are set during high school days.
The Leads were together at that time and broken up due to misunderstandings.
The leads' characteristics are really different but the story turns up in their favors.