Backwolf419
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The Rosette and the Notebook by Backwolf419
Fandoms: Warhammer 40.000, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
03 Jul 2026
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Summary
The Rosette and the Notebook
An MHA x Warhammer 40K Crossover
When a Slaaneshi cult tears open a Warp rift beneath Hive World Voltanis, Inquisitor Severa Kael and her retinue move to shut it down. What they don't expect is collateral — four teenagers from another universe, pulled through the breach and dumped at their feet mid-firefight.
Stranded with no way home, Izuku Midoriya, Katsuki Bakugo, Ochaco Uraraka, and Mina Ashido are taken in by Severa and her retinue — a Scion sergeant and his fire team, a Skitarii Ruststalker, a Sister of Battle who prays like she means it, and a Space Marine who hasn't spoken in three years.
What begins as protection becomes something none of them expected. The students learn. The retinue teaches. Bonds form across a divide that should have been unbridgeable.
But the rift opened a pathway. And pathways, once found, attract attention — the kind neither universe is prepared for. What follows will test every bond forged and every definition of heroism that either world has ever held.
Some accounts can only be closed in blood.