I loved that couple so much! I can’t find another drama  where the female lead is so expressive about her feelings towards the main guy.

I would say 

-introverted boss

-reply 1997 

-reply 1988

-it’s okay to not be okay 

(The reply series is not connected to each other but the parents of the main character is always played by the same actors and with the same name)

and if you’re into Chinese drama to. 

- The main couple in Le Coup De Foudre 

- a love so beautiful 

out of these dramas tho the only one where the girl is really expressive is in A love so beautiful and it’s okay to not be okay.  But the dynamics between the leads of all these dramas is similar to extraordinary you 

Try C-drama Forever Love, 2020. very satisfying.