Hinode Irei is the father of Haru Irei. He possesses a personal connection to the Gundam franchise and Gunpla modeling, having actively participated in the hobby during his youth. He takes Haru to witness the life-size RX-78-2 Gundam display at Odaiba's Shiokaze Park, an event that ignites Haru's initial passion for building Gunpla. Hinode's own history with the hobby positions him as a figure who comprehends its appeal, allowing him to support his son's new interest. He plays a direct role in Haru's Gunpla development by supplying an exclusive "IFS Unit" parts runner. This component upgrades Haru's GPB-X80 Beginning Gundam into the enhanced GPB-X80-30F Beginning 30 Gundam. The upgrade, incorporating design input from Boris Schauer, significantly boosts the mobile suit's capabilities with added armor, vernier boosters, an I-Field generator, and the ability to deploy beam sabers as remote bits. Hinode serves as a bridge connecting generational enthusiasm for Gunpla, embodying the hobby's enduring legacy. Within his narrative, he is a family man, married to Urara Irei, and identified as a working household figure.