Maybe the villains from BNHA team up with some of the evil forces in the Overwatch world. Then the combined good guys, including both BNHA heroes and Overwatch agents, have to figure out how to defeat this new, dangerous alliance. It could lead to some really cool battles and character interactions, like All Might facing off against Doomfist.
A crossover could involve the characters swapping abilities. Imagine Tracer from Overwatch having the ability to call in a Titan like in Titanfall 2. Or a Titanfall 2 pilot having the ability to use some of the support abilities of the Overwatch heroes, like Mercy's healing. This would create really interesting and unique combinations in combat scenarios.
Let's consider Todoroki. His fire and ice powers could be integrated with Mei's cryo - abilities. They could create a super - cold and super - hot zone together. When Todoroki uses his fire, Mei could use her ice to direct and shape the flow of the heat, creating a powerful and unique attack. And in the reverse, when Mei uses her ice, Todoroki could use his fire to create steam and confusion on the battlefield.
One idea could be that the characters from Bnha are transported to the Warrior Cats world. For example, Deku could find himself in a Clan and have to learn the ways of the cats to survive. He might use his quirk in unique ways to help the Clan, like using One For All to jump really high to catch prey or to defend against other Clans.
One great Overwatch Bastion crossover fanfiction is 'Bastion in Another World'. It has Bastion being transported to a fantasy realm. The author does an amazing job of describing how Bastion's mechanical nature interacts with the magic of the new world.
The 'bnha x overwatch fanfic' is interesting as it gives a chance to see beloved characters in new situations. We get to see how heroes like Reinhardt from Overwatch would fare in the world of bnha with all its quirks and hero schools. It also opens up possibilities for crossovers that we would never see in the official works of either franchise. Fanfic writers can take liberties and create unique story arcs that blend the best elements of both bnha and Overwatch.
In 'bnha kny crossover fanfiction', a prevalent theme is the clash of cultures. The very different worlds of My Hero Academia, with its modern superhero society, and Demon Slayer, which is set in a more historical - fantasy Japan, create interesting scenarios. There's also the theme of adaptation. Characters from one universe have to adapt to the rules and norms of the other. For instance, heroes having to deal with the existence of demons, or demon slayers trying to understand the concept of quirks. Additionally, friendship and cooperation across the two universes is often explored as a theme.
One idea could be to have the characters from BNHA attend the Death Weapon Meister Academy in the Soul Eater universe. They could learn about soul resonance and how to handle weapons in a whole new way. For example, Deku could be paired with a unique weapon and struggle to master the new techniques.
Next, when writing the crossover, focus on how the characters would react to the new environment. If Bakugo were to enter the Soul Eater world, he'd probably be very frustrated at first with all the new rules. You should also make sure to balance the elements from both series. Don't over - emphasize one over the other. For example, give equal importance to the development of BNHA - style quirks and Soul Eater - style soul abilities.
A Tsunade crossover in BNHA fanfiction could involve her being from a different world but getting involved in the BNHA universe's affairs. She might end up in a fight against some of the villains. Given her short temper, she could be quite a force to be reckoned with. She could also form alliances with some of the heroes like All Might, sharing her knowledge of combat and medicine.