It enhances it by adding a new level of interactivity. In a regular visual novel, you click to progress the story. But in VR, you might be able to walk around the virtual world of the story, pick up items, and interact with non - player characters in a more hands - on way. The immersion factor is also much higher. The VR headset blocks out the real world and transports you fully into the world of the visual novel. This makes the emotions and events in the story seem more real and engaging.
VR can enhance the experience by providing a more immersive environment. Instead of just looking at a flat screen, you are in the world of the visual novel. It makes you feel like you are part of the story. For example, if the visual novel is set in a medieval castle, you can actually look around the castle walls, the rooms, etc.