One idea for a Naruto vs Todoroki fanfic could be that they are brought into a strange new dimension by some sort of magical entity. Naruto starts off with his usual energetic self, trying to figure out what's going on. Todoroki, on the other hand, is more cautious. Naruto might start with a simple Rasengan attack, but Todoroki uses his ice side to block it. As the battle progresses, Naruto realizes he needs to up his game and taps into his Nine - Tails chakra. Todoroki then decides to combine his ice and fire powers in an attempt to counter Naruto's new - found strength.
One great bnha sero fanfic is 'Sero's Shining Moments'. It really delves into Sero's character, showing his growth and his unique relationships within the BNHA universe. The writing style is engaging and makes you feel like you're right there in the story with the characters.
The most exciting scenario would be when Naruto goes full Nine - Tails mode and Todoroki uses his maximum ice and fire combination. Naruto in Nine - Tails mode is extremely powerful, with his chakra radiating and his physical abilities enhanced. Todoroki, when he combines his ice and fire, can create a powerful and unpredictable force. The clash between Naruto's brute strength and Todoroki's elemental control would be visually stunning and full of intense action. The environment around them would be completely transformed, with the ice melting and the ground shaking from Naruto's power.
Another option is Tumblr. There are often fanfic writers who post their works on Tumblr, especially shorter pieces or works - in - progress. You can search for bnha sero fanfic using relevant tags, like #bnha #sero #fanfic, and you might discover some hidden gems.
One common theme is friendship. Since Sero is part of a hero class, many fanfictions explore his friendships with his classmates like Midoriya and Bakugo. Another theme is his quirk development. Writers often focus on how Sero can improve his tape quirk.
His friends would probably take care of him. Midoriya would be very eager to help, using his kind-hearted nature. He would make sure Todoroki is fed and comfortable.
There's a fanfiction called 'Sero's Adventure'. In this story, Sero embarks on a solo adventure where he discovers a new aspect of his quirk. It's really interesting as it delves deep into his character. Also, 'Sero in the Spotlight' is a good one. It puts Sero in the center of a major event, showing his growth and leadership skills.