My Hero Academia 2: I will endeavor to become a thread you can be proud of

[LaZodiac]

Tend is probably the operative word here. Like, Momo's creation was probably limited by her 4-year-old mind and body, and Kirishima could only harden his skin "a little bit" as late as his final year of Junior high.

On the flip side, Eri reversed her father into a zygote almost immediately.

No probably needed on that one chief, Momo's power explicitly needs her to understand it's atomic structure and Kirishima's forehead scar came from rubbing his forehead when his quirk turned on for the first time.

But yeah there's also...that. Quirk's are dangerous!