Senju is a young woman of below-average height with short light pink hair, green eyes, and prominent eyelashes, sharing similar facial characteristics with her older brother, Haruchiyo Sanzu. Due to her layered tousled bob hairstyle with unruly waves and blunt edges, she is often mistaken for a boy. When she is not tending to her gang duties, Senju wears a white sailor top with a red necktie and a matching light blue skirt that ends right above her knee. She is 1m54 tall, 16 years old