Fukumen Sentai OniRanger

Plot
Over millennia ago, an ancient clan known as the Ningen were faced with the task of protecting their race from the horrible creatures known as Oni. The Oni tribe that stood against the Ningen were dark shamans known as the Kurayami. For years, these opposing tribes fought for the rights to be the dominant creatures of the world – and to send what was left of the defeated tribe into the shadows forever. Twelve shamans from the Ningen tribe sealed the power of eleven Oni into masks that would grant them the power to fight the Oni, by using there own powers against them. The strongest warriors of the Ningen tribe used the masks to drive the Kurayami back into the shadows. However the battle cost the lives of ten of the warriors. The remaining warrior used the magic of the eleven masks to seal the Kurayami tribe leader, Jigoku no Shitetsu, within a twelfth mask. She sealed the masks, and herself, within a statue to insure that the Oni remain within the Shadows.

During a high school field trip to a local museum, two students find themselves in front of the first Oni to appear in over a thousand years….

Now the masks are free and scattered around the world. It is up to the Ningen warrior and the two students – unknowing descendants of the Ningen tribe, to gather the masks and seal the Oni away once more.