Four prestigious ojou-sama schools, known only by Heart, Spade, Club, and Diamond. Hidden beneath their divine facade are 'mysteries' that often end in murder.

Enter the Aces – the students who face death without illusion, delivering justice in a world ruled by demons.

When the Spades' student council is brutally slaughtered, only the Ace of Hearts can unravel the truth. But even she may not be ready for the horrors that await…

[From Itch.io]