Hiroshi Kuronaga

黒長 博, Boy #9

In the novel and manga, Boy #9 Hiroshi Kuronaga is a member of Kiriyama's street gang.

After being told told by Kiriyama to meet with the other gang members at a certain point on the island, he, along with the other gang members, is killed by Kiriyama. He is a small plump boy with tiny glasses.