While using this Quirk, the user can manipulate the growth and movements of all of their hair. Their hair is unusually resilient and indestructible, making it impervious to any harm or damage.
Nagamasa's Quirk is very powerful, as it allows him to create an armor around his body and incapacitate a large number of enemies at once by capturing them within his extended hair.
The hair is prone to get tangled, which can be annoying for him. It is unknown if Nagamasa's usual hairy appearance is a result of his Quirk being activated or if it is his natural look.