1화: 유리 혼조는 가면 쓴 인물들을 피하며 초현실적인 옥상 세계를 헤매고 어두운 비밀을 밝혀낸다.

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Yuri Honjo appears on the roof of a building. Frantic, she calls her brother, Rika, who explains the "world" they are in; roofs of buildings are connecting to each other by bridges, no discernible way to go down by stairs, and no elevators. Masked figures run amok, despairing people to commit suicide by jumping of roofs, which Yuri witnesses. A Mask attacks her, of which he destroys her phone and chases after her. As she reaches an adjacent roof, a police officer shoots the Mask, of which falls to his death. Another officer, Mizushita, assesses the scene, but then pushes the first officer off the roof. Mizushita then proceeds to sexually assault Yuri, when a masked man with a sniper shoots Mizushita. Yuri burns Mizushita's body and takes his gun. Yuri is then spotted by a Mask in a maid outfit, when Yuri shoots the mask, and she learns of another secret of the world; the Masks are humans, who are ordered by a God Command to do tasks. The Command orders the Mask to commit suicide. Shaken, Yuri vows to defeat the God Command by any means necessary. As she makes her way to another building, she spots a helicopter which can transport one person out of the world at certain time intervals. Making her way to the helicopter, Yuri finds a girl threatening a man, but the girl isn't wearing a mask. (Source: Wikipedia)