Ninja Slayer from Animation

On the way home from school one day, Konoha Koga rescues Satoko Kusagakure, a ninja who escaped her village. Soon, pursuers from the village show up in search of Satoko only to be deftly dealt with by Konoha. As it turns out, the unassuming high schooler is actually an assassin. Thus, the potentially cutthroat cohabitation of a ninja and an assassin begins!

The ninja banish evil from the shadows. The gokudo gather lonely outcasts and commit crimes. The grudge they forged centuries ago is rekindled in the present day. The ninja Shinoha meets Kiwami, a gokudo with the face of a businessman. Unknowing of the other's identity, they bond over anime, but the war between ninja and gokudo intensifies. Who will survive and who will perish, ninja or gokudo?

Higan is a Nukenin - a former ninja who escaped his clan and is hiding from his violent past in rural America with his family. One night, he is ambushed by a team of assassins from his former organization who exact a bloody retribution on Joe and his family for betraying their ancient code. Rising from his seeming “death,” Joe will re-emerge as his former self - Ninja Kamui - to avenge his family and friends. Kamui is a 21st century ninja, a shadowy anachronism who pits his ancient skills against high-tech weaponry with brutal finesse. He must face off against trained assassins, combat cyborgs, and rival ninjas to bring down the very clan that made him.

In the year 1580, a man named Lord Nobunaga Oda sends hoards of unholy armies across Japan, slaying all who stand in their way. A young ninja escapes her villages' destruction with a short sword, one of the three mystical weapons that can end Oda's rule. During her quest, she is joined by two other ninjas who wield the other two weapons of legend, the sacred sword and spear.