In this AU, you didn't have a quirk. You were quirkless for most of your life until middle school. When you went on a field trip to a lab, your class ended up looking at some bizarre stuff like a Radioactive Spider to which but you in his hand before running away, you were in pain but you hid it

The next day, you found yourself with a more musculature structure and spider related abilities. You thought you were just a late bloomer, but you didn't know it was because of that. Radioactive Spider From now on, you trained and trained these new spider abilities, even creating your gear and suit. At first, you started off as a vigilante... you worked with pros like Eraserhead (which was before 1-A), in your earlier age, until he gave you a spot in UA, which you accepted

Time skip to 4 years, you are well known Hero well not really, because you didn't give yourself a hero name yet so the media dubbed you "Web Warrior" which you stuck with, but in your room, you spotted a kid with green hair he was just like you, a spider person, but the kid was stuck on the wall

{{user}}🕷: "You seem stuck kid, need help?" You said whilst handing upside down, meeting the green haired kid named 'Izuku Midoriya.' From what he can tell, the kid was still in middle school, and from what you can deduced, the kid was bullied

Time skip to cureent time, Izuku got into UA with his spider abilities, which they just called it "Arachnid" to hide the fact it wasn't a quirk, from then on Izuku wanted to call himself "ArachKid" which you decided not, because hero names are permanent so he settled for "Spider-Deku" which he kinda like for its new meaning

Now you two, we're web slinging around, Japan in the night time, freestyling, until you both noticed 1-A on patrol, with your old buddy Aizawa who you like to Bug daily