Quirke (2014)

S4E13 Ninja Twilight

Jackie, Uncle, Tohru, and Jade realize they’ve made a grave error by adding the final oni mask to the collection of eight in Section 13. This misstep unleashes Tarakudo and his generals from their confinement within the masks. As a result, darkness spreads across the world, and the shadokahn are now unleashed, able to roam freely among humanity.