gantz
Gantz (ガンツ) is a Japanese manga and anime series written and illustrated by Oku Hiroya.
A pair of high school students, Kurono Kei and Katou Masaru, are seemingly run over by a subway train, after saving the life of a homeless drunk who had fallen onto the tracks. Following their untimely deaths, Kei and Masaru find themselves transported—alive and well—along with a number of people who have also just died, to the interior of an unfurnished Tokyo condominium from which the Tokyo Tower may be seen—and none of them are able to leave. At one end of the room is a featureless black sphere known as "Gantz".
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一对高中生黑野圭和加藤胜在救了一名跌倒在铁轨上的无家可归的醉汉的生命后，似乎被地铁碾过。在他们英年早逝后，圭和胜发现自己——活着而且安然无恙——和一些同样刚刚去世的人一起，被运送到东京一座没有家具的公寓内部，从那里可以看到东京塔——但他们都无法离开。房间的一端有一个毫无特色的黑色球体，被称为“Gantz”。