And here's another one!

Sins of the Heroes

(Inspired by Transformers: Sins of the Wreckers)

Izuku and Bakugo have gone missing.

No one knows where they have disappeared to. No one knows where they had last been. One minute they had been with Class 1-A on a fieldtrip out to the biggest hero convention in recent Japanese history, the next, they were gone.

U.A. panics, and Class 1-A move to investigate as well but are stopped by their teachers. This is best left to the police to solve and they didn't trust 1-A to do anything on their own. Not after the Kamino Ward incident. This doesn't satisfy them though, and half the class goes rogue to find them.

Meanwhile, Izuku and Bakugo find themselves waking up in the middle of a dark hall, chained to the wall and unable to move.

The members of Class 1-A that had gone to find both Izuku and Bakugo spread out across the hero convention that they had last been seen at, but find themselves getting stopped by Pro Heroes eager to interfere with their investigation. The students realise that they can't trust any of the heroes at the convention, and sneak their way into the convention place's security room. There, they find that the CCTV footage of Izuku and Bakugo has been deleted, but they are able to recover the file. There, they find that a group of heroes from the Peacekeepers agency had kidnapped them and taken them all the way down to Dagobah Beach, a tourist sight that had recently been cleared and reopened to the public.

As they head to the site, they come across Pro Heroes from the Peacekeeper agency, as well as other Pro Heroes and police officers aligned with them, hampering their path and keeping conventional access to Dagobah blocked off. As such, the students inform Aizawa and All Might of what's going on. Aizawa is furious at their disregard of his orders, but upon discovering that the Pro Heroes and police there are sabotaging the investigation, he moves to join them alongside Pro Heroes that he knew that he could trust.

Class 1-A move in before him, sneaking around the Pros and making it to the beach. There, they discover a secret entrance beneath the sand to an underground facility, but are stopped and attacked by the Pro Heroes of the Peacekeeper agency. Outmatched and outgunned, the students are forced to duck down and disappear underneath the secret entrance beneath them, into parts unknown.

Back with Izuku and Bakugo, they are confronted by their kidnapper, a woman with a Spider quirk who goes by the name of Black Tarantula.

But she can't be. She just can't be. Izuku and Bakugo know this woman. Her real name is Kimmi Kumo, and she is quirkless.

Flashback to Izuku and Bakugo's shared past, and we see Kimmi's part in it. She is an old childhood friend of the two, having been born at the same time as them and sharing the same friends and classes. She had been quirkless like Izuku, and as such had suffered from the same harsh and brutal bullying that Bakugo had given her friend. As such, she and Izuku had grown extremely close to each other, even falling in love with each other at such a young age.

However, while Kimmi might be quirkless, her parents, whom were scientists and researchers, were not, and their work had taken her away from Izuku and Bakugo at the ripe age of ten. And while Izuku had eventually let go of his crush on her, Kimmi had not, and stayed fixated on Izuku for all the years to come.

Kimmi's mother and father worked for the Hero Public Safety Commission, and spent much of their time covering up incidents of heroes committing crimes and working on genetic experiments and analysis for the organisation, of which Kimmi herself had a fascination with. Soon, she would be taking part in the experiments as well, thinking up new designs and ideas as she grew into a progeny in the field of science and genetics.

However, her quirklessness became a subject of debate amongst the HPSC higherups, and soon her parents and family were booted out of the organisation on the grounds of conspiracy. In reality, it had been because of quirkism in relations to Kimmi's quirklessness.

But Kimmi's parents had an ace up their sleeves. They had pillaged the HPSC's files and hidden servers during their time in the organisation, collecting vast documentations of crimes committed by heroes still in service that had been covered up. Counts of undocumented rape, murder, quirkism, and other atrocities had been hidden by the HPSC, and Kimmi's parents had it all on them on a single hard drive.

But they would never get to use it. They would be murdered by Lady Nagant while she was still working for the HPSC, and Kimmi would spend the rest of her life on the run.

After months of hiding away in the shadows, and with the hard drive of crimes committed by heroes still in her possession, Kimmi would end up finding something remarkable.

An abandoned quirk experimentation site, forgotten by All for One and Ujiko years ago and still filled with a plethora of abandoned quirks. Kimmi would hole herself up in the abandoned site for months, experimenting on splicing quirks into rats, and then fusing multiple quirks into herself, turning herself into a spider-like hybrid and finally gaining a quirk. At the same time, she would spend much time spying on Izuku and All Might as they trained at Dagobah Beach through the hidden entrance hidden in the junk and rubbish that once littered the beach.

However, upon looking on the news and seeing the U.A. Sports Festival and seeing Bakugo being proclaimed its winner, Kimmi would decry the injustice of allowing a bullish thug become a hero, and when she sees Izuku, remarking in surprise at his new quirk as well as revolted by the damage that it did him, she decides to put her plan into action.

Converting the Peacekeeper agency to her side, Kimmi would adopt the alias of Black Tarantula and begin approaching agency after agency, showing the heroes within the contents of the hard drive and all the crimes covered up by the HPSC within. Converting dozens of heroes to her side, Kimmi planned to release the information out to the public, bringing down the HPSC and exposing hundreds of heroes for their hidden crimes.

And now she wanted Izuku to join her, and for Bakugo to watch in punishment as everything that he held dear - the very ideal of heroism that he held to himself - crumble to the ground.

Meanwhile, the students of Class 1-A find themselves lost in the wide labyrinth that Kimmi had built in the time that she had spent to herself, constantly hounded by Pro Heroes looking to capture them for their new leader. Meanwhile, Izuku and Bakugo would protest and lash out respectively at Kimmi's plan and demands, proclaiming that the documents and files that she planned to release would destroy faith in the Pro Heroes. It could even bring down hero society itself!

Kimmi said that maybe that was the point. If a society could be brought down by a single document, than it was a society that didn't deserve to exist.

With their conversation at an end, Kimmi would drag away Izuku to begin the last stages of her plan, leaving Bakugo under guard of her allied Pro Heroes. However, the students of Class 1-A would find Bakugo and, with the element of surprise, incapacitate the Pro Heroes guarding their classmate and freeing him. Informing them of Kimmi's plan, Class 1-A would move out to find Kimmi and take her down.

With all of hero society now at stake, their classmate in danger, and the sins of the Heroes they had all looked up too now at threat of being released into the open, Class 1-A would be forced to make a choice:

Do they keep the information about these crimes hidden and keep hero society going on as it is, or do they release it, and bring these people to justice?

I'm writing this at university, so sorry if this idea seems a bit messy.