Gantz

In a haunting and thought-provoking narrative, two high school students die in a train accident only to find themselves transported to an alternate world where they are forced to participate in a twisted game of survival against an otherworldly enemy: aliens hiding on Earth. Armed with a mysterious black sphere known as Gantz, Kei Kurono and his friend Masaru Kato must navigate the blurred lines between reality and fantasy, all while seeking redemption and the chance to return to life by accumulating points through alien kills. As they embark on their perilous journey, they begin to realize that the true horror may not lie in the monsters they hunt, but in the darkness within themselves.