The manga based off the best-selling The Decagon House Murders novel by Yukito Ayatsuji! The members of a particular university’s Mystery Club travel to a ten-sided house on a remote island…which just ha...

Perse, a girl with amnesia who was trapped in the secret room of the castle, was peeking at the alchemy of the young master of the castle, Bloss, and the explosion triggered by the experiment triggered the m...