Momo Yaoyorozu and Shinobu Kocho would be an interesting combination. Momo's intelligent and creative use of her quirk could be enhanced by Shinobu's knowledge of poisons and her calm, calculating nature. Also, Nezuko and Eri could be paired. Nezuko's gentle and protective nature towards her brother could be paralleled with Eri's situation, and Nezuko could be like an older sister figure to Eri, protecting her from harm.
Tanjiro and Deku would be a great pairing. Tanjiro's strong sense of justice and determination to protect his loved ones is similar to Deku's. They could learn a lot from each other, with Deku showing Tanjiro about quirks and Tanjiro teaching Deku about breathing techniques. Another interesting pairing could be Bakugo and Inosuke. They both have a fiery temper and are very competitive. Their interactions would be full of energy and probably a lot of arguing at first.
One interesting pairing could be Midoriya and Spider - Man. Both are young heroes who are constantly striving to prove themselves and have a strong sense of responsibility. They could learn a lot from each other's experiences and fighting styles.
Midoriya and Nagisa would be an interesting pairing. Midoriya is all about becoming a great hero and has a powerful Quirk that he's constantly learning to control. Nagisa, on the other hand, is a skilled assassin - in - training with great stealth. They could learn a lot from each other. Midoriya could teach Nagisa about the importance of having a big dream and standing up for what's right in a more heroic sense, while Nagisa could show Midoriya how to be more stealthy and observant.
Perhaps there could be a plot where a villain in the bnha world discovers a way to summon demons from the kny world. This causes chaos as the demons start attacking the cities. The heroes and the Demon Slayer Corps then have to team up. The bnha characters use their quirks to support the kny characters in battles, like Bakugo using his explosions to create distractions while the kny characters go in for the kill.
Naruto and Ichigo would be an obvious and exciting pairing. They both have a strong sense of justice and a determination to protect their friends. They could learn a great deal from each other's fighting styles and powers.
Storm and Thor would be an amazing pairing. Storm has control over the weather, and Thor is the God of Thunder. They could create some truly epic weather - related attacks together. Imagine them combining their powers to create a massive super - storm to take down a powerful enemy. Also, Jean Grey and Doctor Strange would be very interesting. Jean Grey's powerful psychic abilities and Doctor Strange's magic could lead to some really mind - boggling interactions. They could explore different dimensions of the mind and magic together, perhaps even finding new ways to use their powers in combination.
I think Makoto Naegi and Robin would make an interesting pair. Makoto represents hope and Robin is always there to support Batman. They could learn from each other's positive outlooks. Also, Kyoko Kirigiri and Batman himself could be a great pairing. Kyoko's detective skills are top - notch, and she could either assist Batman or be a bit of a mystery for him to figure out as she has her own secrets.
Naruto and Ruby would be a great pairing. Naruto's positive and determined attitude could inspire Ruby, and Ruby's leadership skills could help Naruto in different situations. They both have a strong sense of justice and a desire to protect their friends.
Naruto and Aladdin would be a very interesting pairing. Naruto is all about his ninja way and his drive to protect his friends and village. Aladdin is kind - hearted and has a deep understanding of the Magi world. They could learn a great deal from each other. Naruto could teach Aladdin about physical combat and perseverance, while Aladdin could introduce Naruto to the magic and the different cultures in Magi.
I think Wolverine and Black Widow would make an interesting pairing. Wolverine's brute strength and regenerative abilities paired with Black Widow's stealth and combat skills would be a great combination. They could have some really cool fight scenes together, like taking on a group of bad guys in a dark alleyway. Wolverine could do the upfront slashing while Black Widow uses her acrobatic moves and gadgets to take out the enemies from different angles.