After Akira Ninomiya miraculously survives a brutal attack by an unknown assailant wearing a “monster mask,” he becomes fixated on finding the attacker and getting revenge.

In order to counter the rapidly increasing organized crime, the development of Polymar Suits resumed under the direction of the newly inaugurated police superintendent. But when three of the test…

The era when Samurai and Ninja existed in Japan. Rikka Isurugi was born and raised in a Ninja clan secluded from society. She soon meets Miya, a girl with a…