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  1. Leash the Monster, Keep the Man by

    Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)  

    26 May 2026

    Tags
    Summary

    Kacchako Week Day 1: Spy/Assassin AU \ Monsterfucking

    Ochako goes undercover with Katsuki and a covert hero team to infiltrate a villain-run auction selling a serum that can turn heroes into monsters.

    Katsuki is only supposed to watch from overwatch, keep her alive, and stay out of sight. Then the serum hits him instead, and the weapon they make out of him has only one thing left it knows how to obey.

    Series
    Language:
    English
    Words:
    22,445
    Chapters:
    1/1
    Comments:
    2
    Kudos:
    23
    Bookmarks:
    5
    Hits:
    383