Kdrama with Male Lead who is a heir to big company

• Something About 1 Percent - the ML must cooperate with his grandfather's wishes in order to inherit the company
• My Secret Romance
• What's Wrong With Secretary Kim
• Cheese in the Trap
  
• The Master's Sun
• Noble, My Love
• The Heirs
• Secret Garden

Dramas that are close, but don't quite fit:

• Coffee Prince - ML's family owns a large food conglomerate, but after fooling around in his youth the ML has to prove himself by running a coffee shop 
• Are You Human Too? - the ML is a robot modelled after the human heir to a large technology company and takes his place
• Oh My Venus - the ML avoids the company and works as a celebrity personal trainer instead
• That Winter, The Wind Blows - the FL is the heir to a large company
• High Society - the FL and SML belong to families that own large companies
• Cinderella and the Four Knights - the heir to the company is not determined, but will likely be one of the chairman's three grandsons, including the ML 

https://mydramalist.com/21306-introverted-boss

https://mydramalist.com/24289-revolutionary-love

https://mydramalist.com/70-shining-inheritance

https://mydramalist.com/22477-school-2017

• What's wrong with secretary Kim
• Master's sun
• Kill me Heal me
• Secret Garden
• Noble my love
• King shopping Louis
• Fated to love you

isnt that like every kdrama ever, i mean you could just randomly watch one and half of the time its something like that