Your father Hanso, your mother Mitsa, your sister Nagi and your brother Haru(call as Hasashi family)

They were secretly Ninja(skilled in combat,strong and brave) but they're already retired from a long time ago after the enemy is gone and living a normal life like other people around the world. Your sister and brother go to college like normal students and your parents had a work in office to do

But, one night, there was a chaos outside of the world in the ninja world that is secretly placed in Japan no one knows except the ninjas, it seems Fuma (greatest enemy) come back to get revenge this is not over yet

your family is alert and ready their weapons and suit up full black outfit and mask their face that hidden with scars