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.
Well, in this kind of fanfiction, probably his friends would be super shocked at first. They might struggle to take care of him as he's now a baby. His powers could also be affected in some strange ways, like they might be uncontrollable or show up in unexpected forms since he's in a baby's body.
Well, in a Todoroki turns into a girl fanfiction, perhaps there's a villain who has a transformation quirk and uses it on Todoroki as a form of psychological warfare. Todoroki, now a girl, has to find a way to reverse the effect. In the process, he/she realizes that society treats female heroes differently and has to fight against those prejudices too. Maybe he/she even uses this new form to her advantage in some battles, by using the element of surprise.
One popular baby Todoroki fanfic could be 'Baby Todoroki's Adventure'. It might focus on his early days and how his unique quirk starts to show in a cute and innocent way. Another could be 'The Little Todoroki' which could explore his relationship with his family members at a very young age.
Here are some recommendations for super cute novels about the protagonist turning into a baby:
1. " Primitive Soul: Please Line Up for the Married Husband ": The female protagonist dressed in primitive society and played the role of a princess. She had all kinds of husbands who pursued her. The plot was sweet and funny.
2. " Cute Baby Looking for Her Father: Mother Is Getting Married ": The story tells the story of the female protagonist, who became a baby girl after transmigrating and searched for her father.
3. " I Really Don't Want to Become a God After Checking in for Ten Thousand Years ": The male protagonist, Su Chen, transmigrated to a different world and became a baby. He had a powerful check-in system and obtained benefits such as divine artifacts through check-in.
Please note that the above recommended novels may only be part of the relevant results. Please read and confirm the specific content and plot.
You can try searching on websites like Archive of Our Own (AO3). It has a large collection of fanfics, and there's a good chance you'll find some great baby Todoroki fanfics there.
Family is a common theme. Since Shoto has a complex family situation, fanfictions often explore how his family members interact with him as a baby. For example, how his father might view a baby Shoto with his powerful quirk.
His relationship with Midoriya might change. Midoriya could become more protective of Todoroki as a girl, seeing her as more vulnerable. With Bakugo, there could be a different dynamic. Bakugo might initially tease Todoroki more, but as he sees Todoroki still being strong in her new form, he might develop a new respect for her.
One idea could be that in this fanfiction, Wolverine turns into a baby due to a powerful mutant's accidental spell. The X - Men then have to take care of him while also trying to find a way to reverse the transformation. They might discover new aspects of Wolverine's personality as a baby, like his unwavering determination is now shown through his attempts to crawl towards danger.
There's 'Baby Shoto's Adventures'. This fanfiction focuses on how baby Shoto's quirk starts to show in cute and innocent situations. It has a lot of endearing moments between baby Shoto and the other characters in his world, like his family members. It really brings out the charm of a young Shoto Todoroki.