In the 'Harry discovers Draco is Imperioed' fanfiction, how does Harry react when he discovers this?

Harry is likely to be shocked at first. He has always seen Draco as a self - willed rival, so finding out that Draco is being controlled by the Imperious Curse completely changes his perception. He might freeze for a moment, trying to process what he has just realized.

Harry might be shocked at first. He'd probably feel a sense of urgency to break the Imperius Curse. He could also feel a bit of pity for Draco, as Draco is being controlled against his will.

The plot could involve Harry suspecting the Death Eaters or some other dark forces of being behind the Imperius Curse on Draco. So, he starts to investigate secretly, which might lead him into dangerous situations. Maybe he discovers a connection between Draco's Imperius state and a larger, more sinister plot against Hogwarts or the wizarding world in general.

He'd probably be shocked. I mean, Dudley has always seen Harry as the odd one out in the family, and suddenly finding out he's famous in a whole different world of fanfiction would be quite a surprise.

Snape might be initially shocked but then try to hide his concern. He's a complex character. He could act indifferent in public but secretly start to gather information about who is behind the abuse. He might also start to keep a closer eye on Harry without the boy realizing it.

He'd probably be annoyed. Snape is a serious wizard and he might think fanfiction is a silly Muggle - influenced concept.

He might be curious. Harry is always eager to learn new things. He'd probably read it with great interest to figure out what this new world of RWBY is all about.

He might be shocked at first. Then he could feel a strong sense of protectiveness towards Harry. Maybe he immediately tries to find ways to keep Harry safe from further harm, like staying closer to him at all times.

Well, Bill could be shocked at first. But then he would likely become very protective. He may take Harry to a safe place, like the Burrow, and gather his family around to support Harry. He would also probably try to find out more about the abuse, like who was behind it and for how long it had been going on. He'd be determined to make sure it never happened again.

Sirius would likely be extremely angry. He already has a protective streak towards Harry. He might immediately confront those he suspects of the abuse, whether it's the Dursleys or others at Hogwarts. He would probably also try to remove Harry from the situation as quickly as possible.