Nobody besides Toxin Can use read or write runes due to it being a quirk even if it looks like learnable magic it’s not, toxin came up with the term rune himself other people don’t know what to call them, they run on a power source called mana that awakened with Toxin’s quirk that drains whenever he gets bored and tired or when over using or chaining complex runes together, This unique quirk and the fact that he was raised by Venom after his forest burned down and the anti-hero turned teacher took him in training him until he could join the academy, planning to eventually bind a symbiote called Lasher onto Toxin, Venom and Toxin share a father son bond yet they never act like it, venom and Eddie are good friends as well they bicker and argue but never seriously