15-year-old heroine of the game "Demonophobia".  A schoolgirl who accidentally read a spell from a cursed book and her whole house fell into the labyrinth world, which turned out to be hell.  The demon Reeds came to her aid, who at the end betrays her because she refused to release him into the real world and destroy him.  Sakuri was brutally killed numerous times along the way, and Reeds resurrected her and erased her memories.  She has little memory of who she fought and how long she's here.