Media: Samurai Harem

(Summary) 

His skill with a sword is magnificent but his social skills need a lot of work. After many long years perfecting the art of fighting, a 17-year-old is sent down from the remote mountains to begin new training. 

But what he's really going to learn about are more practical things, like electrical appliances, modern clothing and, most especially, how not to make girls to want to kill him. 

That last lesson is one he may not survive, as his new dojo is infested with the infernal creatures in the form of young women. But his days came when the ones responsible for the disappearance of his brother and father returned for supernatural materials known as Ninja Power Stars. It's up to a new team of heroes to stop this threat and save the world from destruction.

(Rangers)

Yoichi Karasuma: Ninja Steel Red

Ryo Washizu: Ninja Steel Blue

Keita Torigaya: Ninja Steel Yellow

Ibuki Ikaruga: Ninja Steel White

Ayame Ikaruga: Ninja Steel Pink

Mikochi Karasuma: Ninja Steel Gold