first to find the ruin that struck the medical facility they were treated in. A shy and gentle girl, she was notable in that she was the only one who actually supported the thuggish-looking Marco when the survivors started their escape, something that eventually turned into a crush, though ill-advised by more than one of the other characters, who saw Marco as dangerous and untrustworthy. Occasional glimpses are offered on Kasumi's life prior to her being chosen: she was quiet and reserved, the foil of her twin sister in mind, though identical in body, save for the fact that she wore glasses. These flashbacks show that Kasumi was strongly attached to Shizuku, to the point of borderline obsession, which in turn not only fueled unstable thoughts, such as wishing to die in the same way at the same time, but also gave birth to suicidal tendencies that manifested themselves when Kasumi, while bathing, tried to take her life by slitting her wrist with a razor, unable to accept the idea of living in a world without her beloved sister. Shizuku was nearby and saved her sister, though their bond was greatly shaken. Only at the end of the series, it was revealed that Kasumi was dead all along: before parting, she and Shizuku shared a brief moment together on the cliffs near the castle that housed the medical treatment facility, and during this instance Kasumi, still unwilling to be the only one to survive, wished for the two of them to die together by jumping down the cliff. Rejected by Shizuku, Kasumi was accidentally thrown over the edge during the ensuing struggle and killed, an event that unleashed her sister's Medusa powers and, with them, the chaos that would envelop the island and the world itself. The Kasumi the viewer sees during the entire story is, in fact, a Medusa-produced entity created by Shizuku, who wished for her sister to be alive no matter what, even at the expense of the world. In the film version, she and Tim are left as the only survivors at the facility, with Kasumi vowing to help him reunite with his parents. Marco is the main male character of the series. He is a fearsome-looking man with a muscular frame and many intimidating tattoos all over his body who is also an expert hacker, so much so that he was able to crack through