Hiro Shishigami is a high school student and the main antagonist of Inuyashiki. He lives with his mother and is currently one of the most wanted serial killers alive, though details about his background remain largely unknown.
Everything changed when he and Inuyashiki were infused with alien cyborg technology. While Inuyashiki used his newfound abilities to help people, Hiro went the opposite direction—using his powers to commit murders, which seem to be his primary way of feeling anything at all. He started with causing traffic accidents and general chaos before escalating to targeting random families. He's fond of imitating gun gestures to kill his victims, a quirk that's become somewhat signature to him.
Hiro possesses the same capabilities as Inuyashiki: flight, advanced combat skills, superhuman healing, and the ability to interface with any electronic device. His body is seamlessly integrated with the technology itself. The key difference is what he does with these powers—theft and murder, rather than heroism.
He was eventually identified by police after being turned in by both Inuyashiki and his former best friend Naoyuki Andou. He's now on the run. Fans often speculate that his violent tendencies stem from bullying or a difficult home life with only his mother, though the series hasn't explicitly confirmed this yet. Whatever the cause, his path diverged completely from Inuyashiki's the moment they gained their powers.
Content compiled by AnimeList.moe from publicly available sources.
