The manga is about a young man who uses his Quirk to help others. After he and a girl are harassed by a group of thugs and saved thanks to the vigilante Knuckleduster, Koichi is recruited to become a vigilante himself.
The manga has a slightly darker tone compared to the original manga.
The manga has had a positive reception, for being unique and telling its story from another angle within the My Hero Academia universe. At San Diego Comic Con 2017, Viz Media announced they would release the manga in English weekly until they catch up to the monthly release.