When it comes to 'Rewrite the Stars' fanfiction, a great way to start is by focusing on the emotions of the characters. You could rewrite it from a different character's perspective. Say, if the original focused on the male lead's view, rewrite it from the female lead's. This can give a fresh take on the relationship and the story as a whole.
A villain like Shigaraki would likely be interested in the power levels in the MCU fanfiction. He's always looking for ways to increase his own power, and seeing the various powerful artifacts and abilities in the MCU might give him some ideas. He could think about how he could use similar things in his own plans to take over the MHA world.
You could start by imagining new scenarios or character interactions that change the original story's direction. Maybe introduce unexpected plot twists or give the characters different motivations.
Some MHA characters might be flattered. For example, Midoriya would probably be really excited and take it as a sign of how much he's inspired people. He might even look for positive lessons in the fanfiction to improve himself.
If the MHA characters were to react to a Mastermind fanfiction, some would be more accepting than others. Characters like Ochaco might find it really exciting. She's a fan of the heroes herself, so seeing different takes in fanfiction would be like getting a new perspective on the MHA world. However, characters like Shoto, who are more reserved, might be a bit hesitant. He might need some time to process what he's reading. But overall, it would be a very interesting scenario as it would show how the characters view different interpretations of their world.
Some characters would be shocked. For example, if the fanfiction had a really dark and unexpected Mastermind plot, like a hero turning out to be the mastermind of all the villains' plans, characters like Tsuyu would be very taken aback. She'd probably question the motives behind such a plot. Then there are characters like Denki. He might be more into it if it had some cool action scenes in the fanfiction, regardless of how out - of - the - blue the Mastermind storyline was. And Nejire would probably be super curious about the emotional depth of the characters in the fanfiction.
Since it's not clear if there is an actual 'Rewrite the Stars' novel, it's difficult to say where to find it. If it were a self - published or indie work, it might be on platforms like Amazon Kindle Direct Publishing, but there's no guarantee.
There might not be a 'Rewrite the Stars' novel in the mainstream. However, if one were to be written, it could explore themes like hope and the power of the human will. For example, the story could center around a young couple from different social classes or backgrounds, similar to the Romeo and Juliet archetype. They face numerous obstacles in their relationship, but instead of succumbing to fate, they strive to 'rewrite the stars' for themselves. This could involve them going against family expectations, societal norms, and even battling their own insecurities to be together.
One way to add depth to 'Rewrite the Stars' fanfiction is through detailed descriptions. Instead of just saying they fell in love, describe how their eyes met, the small gestures they made. For example, when their hands brushed accidentally, describe the jolt of electricity they both felt. This makes the relationship more believable.