Iori Hashima, older brother to Izumi Hashima, initially serves as the appointed representative for the doujin circle Rouge en rouge under Akane Kosaka. He later transitions to become the producer for Blessing Software.

He possesses short reddish-brown hair, purple eyes, and a distinctive beauty mark under his left eye, often noted as handsome. His personality appears friendly and soft-spoken, though he can turn cold if ignored and dislikes being labeled a "nice guy" due to associated complications. He demonstrates kindness, such as aiding Tomoya Aki during difficult times. His hobbies include popular anime, light novels, manga, and games, plus strategic participation in doujin activities.

His background includes a past friendship with Tomoya during middle school, evolving into a professional rivalry centered on competing game releases at Comiket. He actively attempts to recruit Eriri Spencer Sawamura as an illustrator for Rouge en rouge, but she declines due to her commitment to Blessing Software. Regarding his sister Izumi, he expresses protectiveness while pragmatically assessing her artistic abilities within doujin contexts.

During Blessing Software's game development, Iori frequently clashes with Megumi Kato over differing production approaches. When Akane Kosaka suffers a stroke, he temporarily assumes a managerial role for her project Fields Chronicle alongside Utaha Kasumigaoka's editor. He informs Tomoya about Fields Chronicle's significant delays and potential compromises, indirectly prompting Tomoya's intervention to salvage the project. Concurrently, he supports Izumi's artwork for Blessing Software by providing remote feedback during development crunches.

His arc concludes with contributions enabling successful Comiket releases for both Fields Chronicle and Blessing Software, solidifying his transition from rival to collaborative figure within the doujin scene.