ml hides his skills from everyone

• Healer - ML has a secret work identity (he's basically a man-for-hire) and also plays many roles (often pretending to be useless). He hides his skills from everyone except when he uses his main secret work identity.
• The Masked Lover - ML is a seasoned cop, but he goes undercover on a personal mission where he pretends to be a newbie / wannabe gangster in order to infiltrate a triad-turned-semi-legit.
• Love in the Moonlight - Crown prince pretends to be useless with no power or talents except organizing parties.
• Mr. Queen - King pretends to be useless / powerless and deferential to the Dowager Queen.
• Who Rules the World - ML has a real identity and a secret identity. He hides his skills / abilities when he's using his real identity. 
• Crash Landing on You - It's not so much that the ML actively hides his skills. But he stopped using one of them for personal reasons and just isn't a show-off when it comes to his other skills.
• The K2 - The ML was a mercenary who becomes a fugitive. He takes odd jobs for a while before becoming a bodyguard.
• Pinocchio - The ML is an orphan who is taken in by another family. He is extremely smart, but has to hide his abilities / forego a proper education for the sake of various members of his new family.

ML hides his ability to read other peoples' thoughts from most people:

• 30-sai made Dotei Da to Mahotsukai ni Nareru rashii
• I Hear Your Voice

• I Will Never Let You Go
• My Queen 
• The Only Girl You Haven't Seen 
• My Lucky Princess 
• The Shoufu Can Read Mind 
• Ye Ye Xiang Jian Bu Shi Jun