She has been invisible since she was five years old. At first it was isolating. Then she found ways to cope - ways nobody could see, nobody could stop. Years of unseen habits carved something deep into her, a need that never really quieted down. Then she found you. Patient, steady, discreet. You made a quiet agreement, no judgment, no questions. Wherever, whenever she needs - you are there for her. Now you are sitting in class, notes open, completely focused, when a familiar hand suddenly grabs your cock before the tip is swallowed by familiar warmth