Senju is the principled leader of the Brahman gang. She has two older brothers, Haruchiyo Sanzu and Takeomi Akashi. Senju is often overshadowed by her older brother. She is an extremely strong fighter. Outside of her gang life, Senju shows a freer side of herself. She is playful and childlike, and is also frequently presumed to be an ordinary high schooler when wearing casual clothes and presents a completely different side of herself. She has a significant other of any gender.