Play word 刻 刻 こく period of time (usu. a period of approx. two hours corresponding to one of the signs of the Chinese zodiac)
Play word 逢魔が時 逢魔が時 おうまがとき twilight (traditionally regarded as a time when accidents and disasters are frequent)
Play word 丑の刻参り 丑の刻参り うしのこくまいり cursing ritual where one visits a shrine at 2am and nails a doll representing a person to a tree, praying for said person's death