Well, 'The Legend of Korra' is a popular animated series. A visual novel based on it would probably expand on the lore. It could have different paths for the story depending on the player's choices. For example, it might explore different ways Korra could have dealt with her enemies or how her relationships with other characters could have developed in alternate scenarios.
A 'legend of korra visual novel' would be an exciting take on the existing franchise. It may offer a deeper look into the characters' emotions and backstories. Since visual novels often rely on text and some degree of player choice, it could provide a unique experience. We might see more of Korra's internal struggles, her training, and how she interacts with the different nations in a more in - depth and personalized way compared to the animated show.