In a parallel universe, Denji, a powerful Devil Hunter from the manga Chainsaw Man, found himself transported to the world of My Hero Academia.
At first, he was excited to be a part of a new world and was ready to use his powers to fight against evil. However, soon he realized that his brutal fighting style was causing fear and panic among the citizens and the other heroes.
Denji was used to fighting against demons and monsters, and his methods were extremely violent and gory. He would use his chainsaw to chop off the limbs of his enemies, leaving them maimed and bleeding on the ground. This kind of brutality was not accepted in My Hero Academia, where heroes were expected to capture their foes alive and bring them to justice.
Despite the rejection and misunderstanding, Denji was determined to use his powers to help the people of My Hero Academia and fight against the villains who threatened their safety. He was convinced that his methods were the most effective way to defeat evil.
One day, a powerful villain known as All for One emerged, terrorizing the city and defeating all the heroes who stood in his way. With no one else to turn to, the citizens of My Hero Academia begged Denji to help them.
Denji knew that this was his chance to prove himself and show the people that his methods were effective. He accepted the challenge and engaged All for One in a fierce fight was intense and brutal, and Denji's chainsaw was wreaking havoc on the villain's body. But in the end, All for One was defeated, and the city was saved. But the collateral damage was huge, buildings were destroyed, and many citizens were hurt or killed.
The people of My Hero Academia were shocked by Denji's victory and horrified by the brutality of his methods. They realized that they could not accept this kind of violence in their society, and Denji was forced to leave the city and return to his own world. From that day on, Denji was considered a ruthless monster and was no longer welcomed as a hero.