Toko bears a great resemblance to her ancestor, Nezuko Kamado, having the same waist-length black hair parted to the left side of her forehead. Towards her brother, Toko shows great aggravation and animosity, often berating him for his antics and telling him off for not studying. At times, she resorts to physically attacking Yoshiteru, such as kicking his back or tugging on his ear.