Izumo Kusanagi features in the spin-off "The Idol K" from the "K: Seven Stories" project, set in an alternate reality where he co-manages an entertainment office with Mikoto Suoh and Misaki Yata, dedicated to producing idols. He oversees financial and logistical operations, including budget management and day-to-day oversight, a role that parallels his canonical bartender and manager position within the idol industry. Kusanagi's practical attire combines professional coats with aprons, reflecting his hands-on involvement in the group's activities.