Yoroi-Shinden Samurai Troopers

Uesugi Kaito steals Armored Gear while pursuing the demons that killed his grandmother, Yoshie. Later, when he goes to the crematorium to mourn his grandmother, the homeless dead turn into "Kairai" and attack Kaito. He tries to fight in Under Gear to protect the other survivors, but hesitates to attack when faced with the human Kairai.