Praesepe(積尸気せきしきSekishiki) are the blue stars connecting Earth and the Underworld. Normally, they only serve as a natural passage for the souls of the deceased, but the Cancer saint can use them to open up a path to Yomotsu Hirasaka through which a living soul (and even the body) can pass. Additionally, Praesepe (or Sekishiki) is also the name of an ability that allows the user to see and interact with disembodied souls in ways that are impossible to most humans.