One interesting plotline could be Deku having to face off against his classmates in a series of challenges that test not only their quirks but also their teamwork and strategic thinking. Maybe there's a misunderstanding that leads to the conflict.
He could meet his past allies in a different context. For instance, he might encounter Kakyoin or Polnareff when they were just starting their journey. Maybe he could also run into Dio at a time when Dio was still plotting his rise to power, which would create a very tense situation.
Deku himself is likely to shine. Given his powerful quirk and his growth throughout the main series, he'll surely put up a great fight against his classmates. Bakugo could also shine as he's always been in competition with Deku and has a very strong quirk.
One interesting aspect could be the different interpretations of the characters' powers. In fanfiction, the author might explore new ways Deku uses his One for All ability against Overhaul's powers. It can also show different battle strategies that might not be in the original manga or anime.
You can try looking on fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. These platforms usually have a wide variety of fanfictions, including ones related to 'Deku vs Overhaul'. Just use their search functions to find what you're looking for.
Well, 'Jotaro's Redemption' is an interesting jotaro fanfic. It shows Jotaro dealing with the consequences of his past actions and trying to make amends. 'Jotaro in the Parallel World' is also quite cool. In this fanfic, Jotaro is transported to a parallel universe where things are very different from his own world. He has to adapt and find his way back. Then there's 'The Secret of Jotaro' which uncovers some hidden aspects of his character.
Once upon a time, Jotaro was on a long journey. He had been traveling all day, fighting off strange creatures with his Stand. As the night fell, he found a small, cozy cave. He made a fire using some dry branches. Then, he sat down and started to think about his friends and family. The warmth of the fire made him drowsy. Slowly, he lay down, using his hat as a pillow. With the sound of the crackling fire and the wind outside, Jotaro drifted off to sleep, ready for whatever new adventures awaited him in the morning.
Jotaro was in a forest. It was getting dark. He used his Stand to find a safe place to rest. He found a large tree with a hollow at its base. He crawled inside and made himself comfortable. He thought about all the times he had been in dangerous situations. But here, in this quiet forest hollow, he felt at peace. The sounds of the forest at night, the hooting of owls and the rustling of leaves, were like a lullaby to him. He closed his eyes and soon was fast asleep, his Stand standing guard over him even in his dreams.