Bristle (?) is the Quirk used by Tsuyoshi.


Bristle allows Tsuyoshi to make his hair super hard.[1] He has not been seen using it under any circumstances, so more characteristics of the Quirk are unknown.


  • This Quirk shares similarities to the unnamed hardening Quirk possessed by Crimson Riot.


  1. My Hero Academia: Team-Up Missions Manga: Chapter 3.2.

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