Ryakudatsusha no In'en

A back story of Roy, the main character of Ryuukishi Bloody † Saga, depicting his life at early stage. Having been born in a loving family in a small village, at some point the village got attacked and burned to the ashes by a group of villains, who killed his father, raped his family and enslaved him so that he'd take care of their growing-up daughter.. and their growing-up lust up to murderous extent.