This is a game that was distributed at Comic Market 80. It is the doujin PC game "Grief Syndrome" by Tasogare Frontier, based on the anime "Puella Magi Madoka Magica," which was temporarily sold to the general public and later banned by the official. I played it once and stored it in a dark place. Please refrain from purchasing if you are sensitive to used items. Puella Magi Madoka Magica Tasogare Frontier PC Game Software