My Hero Academia Wiki
My Hero Academia Wiki

Size (サイズ Saizu?) is the Quirk used by Yui Kodai.


This Quirk grants the user the ability to alter the size of objects that they come into contact with. As seen during the Joint Training Battle, Yui can only activate this power by pressing five of her fingertips together.


The only drawback is that her Quirk won't work on living things.[1]


  • The Quirk's function appears similar to that of Ochaco Uraraka’s Zero Gravity, as both involve the user using all five of their fingertips to activate its effect.
    • This is possibly a reference to Yui's design being considered for Ochaco's before her final appearance was decided.
  • The effects of this Quirk are similar to those of a student from Seijin High School, although the two characters don’t seem to share any apparent relation.


  1. My Hero Academia Manga and Anime: Chapter 210 and Episode 98.

Site Navigation