Well, one key element is a powerful and unique main character. They usually have extraordinary abilities or skills that set them apart. For example, in some 'op main character novels', the main character can control elements like fire or water with great ease. Another element is a complex and engaging plot. There are often challenges that seem insurmountable at first, but the 'op' main character overcomes them in creative ways. Also, a well - developed world - building is important. It gives the context for the main character's actions and growth.
I think it's hard to say for sure. Different people might have different opinions on who the main character is depending on their interpretation of the story.
The main character in 'Mr President' manhwa is typically a complex and dynamic individual whose actions drive the story forward. But without specific details, it's hard to pinpoint exactly who it is.
'The Beginning After The End' is also a top - notch OP MC novel. Arthur Leywin is reincarnated into a world with magic and he has an innate talent that allows him to quickly rise in power. The story not only focuses on his power growth but also on his relationships and the world - building is quite immersive.
One popular one is 'Overlord'. The main character Momonga is extremely OP. He is transported into a game world where he has incredible power and has to navigate this new reality.
Typically, the main character, the mother, is often strong - willed. For example, she might be determined to protect her family or community at all costs.