The video game Metal Gear Solid: Peace Walker and afterwords of the last volume of the manga Aki Sora were dedicated to his memory.
He had written a tie-in novel based on the video game Metal Gear Solid 4: Guns of the Patriots.
[1] A poll by the yearly science-fiction guidebook SF ga Yomitai ranked Genocidal Organ as the number one domestic sci-fi novel of the decade.
[3] Toh Enjoe's Self-Reference ENGINE was also a finalist of Komatsu Sakyō Award and published from Hayakawa Shobō in 2007, along with Itoh's Genocidal Organ.
Itō was hospitalized again in February 2009, and Kojima once again released information regarding the next entry of the series, Metal Gear Solid: Peace Walker, to him.