Authors Note

⚠️Warning: there's some violent/gory/blood description in this book so...⚠️

There's a Villain organisation that works alongside the hero killer, Stain, and the league of villains. They were created and are lead by All for One, mortal enemy of All Might's (the number one hero).
They are Numéros. A team of eleven people. Each with a mask, plain white with a symbol on it. A number. Ranging from 0 to 10. Each one stronger than the last.
Two of the members of Numéros infiltrate UA with the intent to gather information on the number 1 and number 3 hero who were teaching there while tainting the newest class to their side.
However, they find that it's not that easy and find themselves being "tainted" onto the hero side.