The Deputy Minister appears within the military hierarchy overseeing the ultimate weapon program in the OVA "SaiKano: Another Love Song." This character commands authority within the Japan Self-Defense Forces, directly involved in the chain of command responsible for developing and deploying weaponized prototypes, including Lieutenant Mizuki and Chise. Operating under Director Minamoto, the Deputy Minister participates in high-level military decisions concerning the weapon system's deployment and the management of its subjects.