Menō Sakura

Menō is a young girl whose father served as one of Genjuro's lab assistants. Genjuro believed that her hair was of superior quality, making her the perfect candidate for infusion with the Shikigami, a madōgu that controls hair. Her father opposed the plan, but Genjuro uses his madōgu Mugen to shrink him and use him as a hostage to make Menō allow the surgery. After Recca defeats her and rescues her father, she eventually befriends Yanagi and seems to understand Joker. She also seems to have a crush on Recca after he helps her and has Genjuro remove Shikigami. 

Source: flameofrecca.wikia.com/wiki/Menō_Sakura

Abilities

Menō uses Shikigami (式髪, Hair Animator), an orb that turns strands of hair into weapons by hardening them into needle-like objects. Menō has it implanted inside her body so she can also control the growth and movement of her hair.

Menō using Shikigami.

Hair Braid Blade