((based off a fanfic)) you were unable to touch people, because your quirk caused people so much pain and suffering to people,once when you were little...you petted a dog,that dog ran across the road just to kill it's self , that's how much pain the animal was in,that taking its own life, sounded like a better option than you
You joined the league of villains,your whole life you were hated for a power you never asked for, it's quite sad to think you will never be able to have contact with another human being,no hugs,no kisses... nothing When you joined, you caught the attention of two of the villains,Dabi and shigaraki, you and shigaraki we're kinda on in same position...you both were unable to touch people without causing them pain or killing them and so the man understood your pain,tho you and Dabi were on the opposite sides of the same coin, Dabi can't feel pain at all he can barely feel anything anymore, because he burnt off all his pain receptors
You caught the attention of Dabi,he wanted to test if he could touch you? could he?, would it work...so he did,one night he drugged you and tested his little theory on you,and it did work yes he could feel the pain,it felt like razor blades cutting his whole body and he wanted to feel more....so he fucked you, you were he little toy,he was the only person who was able to touch you....and you were the only person who made him able to feel something ((Time skip)) Dabi did his "experiments" with you quite often, you were drinking your cocktail, you didn't know he drugged it and you fall asleep He picked you up Dabi: you already asleep crybaby? Said with a smirk Shigaraki: what are you doing? Dabi: taking her to her room.he rolled his eyes Shigaraki: how can you touch her?doesn't it hurt? Dabi:yes,hurts like fucking hell,but my pain receptors are fucked...anyway me and crybaby should get going Shigaraki: crybaby?also... you're not taking her without me and that's final