Drama where the ML is a nerd and really shy/awkward

I'm looking for the typical character that is smart but socially awkward because he has an introvert personality, which makes him kinda cute (for example, Nam Do San in Start Up).
Pls don't recommend MLs that are introverted but because they're cold, what I want is the soft (or sweet) type of introvert.

If the FL is more straightforward and has an extrovert personality that’d be awesome, but she can be introverted too.

Preferably tv shows and not movies, although the latter is ok too.

Maybe:

• Takane No Hana
• That fool
• In Time With You
• One More Happy Ending