Reinforce (硬質化 Kōshitsu-ka?) is a Quirk used by Shikkui Makabe.
This Quirk seemingly allows Shikkui to harden held objects, making them harder than even concrete. This is done by rubbing or kneading the objects together with both hands.
This Quirk has no effect on living beings.
- This Quirk is the inverse of Hardening, which only hardens the user's body itself.
- ↑ Boku no Hero Academia Manga: Chapter 104, Page 2
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