Etaos

Matia never knew about her family's curse until it just happened. Her family's curse is called the Boneblade curse. It causes the person to have accident sometime in their childhood, that bone that breaks will cause them to go insane if they do not remove it and tear it out. It will become their weapon, and it will speak to them. It craves human flesh, if it doesn't get it, it will go into a rampage to get its own meal.
Will Matia be able to handle her cravings and her Boneblade? Will she be able to control herself around her sister and make sure her sister doesn't turn into a killer like her?