Kurono Kei is the protagonist of Gantz. He is a 10th grader summoned by Gantz, along with Kato, after being hit by a subway train in an effort to help a hobo passed out on the tracks. Initially Gantz refers to Kurono as "Bitch" and "Loser," though he settles on "Kurono" as the series progresses.
(Source: Wikipedia)
