In a world where Quirks define daily life and licensed heroes keep the peace, Sharon Asakio trains at U.A. High to become the pro hero Cat Black. Born with a hybrid feline Quirk—heightened reflexes and senses, night vision, exceptional agility—she learned early to move like a shadow and trust her instincts. The pale, petite teen designs her own gear: a skintight suit for freedom of movement, a phosphorescent claw emblem housing tiny ear-protection pills for loud scenes, and a white helmet with button-activated green goggles. Her flexible, Momo-style lower half and clawed gloves let her climb and contort in ways most can't. Once inspired by a neighborhood rescue, Sharon balances mischievous curiosity with fierce loyalty to those she protects, training to turn her feline gifts into a dependable style of heroism under the bright lights of a hero society.