Everyone think MC is losser (poor/idiot/coward)but turns out out he is OP(rich/smart/fighter)

Secretly Great - Movie

Pinocchio 

Definitely:

• +1 Pinocchio
• +1 Healer
• The Legends
• City Hunter
• Gu Family Book
• Hwarang - iirc

To a lesser degree:

• Crash Landing on You
• Fight For My Way
• Love in the Moonlight
• Ugly Duckling Series: Perfect Match
• The Masked Lover
• The King: Eternal Monarch
• Moon Lovers: Scarlet Heart Ryeo
• Kimi Wa Petto
• Dream High
• Itaewon Class
• The Story of Ming Lan

the first ones i rememberd  were mad dog and the kings avatar

• Healer
• Shopping King Louis
• 100 days my prince
• Ruler master of the mask