Itsuki serves as a cafeteria employee at Basara Academy within the anime's modern school setting. Her origins trace back to a northern Japanese rural village plagued by suffering peasants due to frequent tax-collecting samurai raids. A divine intervention occurred when the rice field goddess Ukanome, recognizing Itsuki's dedication to rice, bestowed upon her a giant magical hammer. This empowerment enabled her to lead fellow villagers against oppressive samurai, cementing Nobunaga Oda as her sworn enemy.

Her personality blends a light Tohoku dialect with rural speech patterns and exhibits magical girl-inspired traits, including whimsical taunts and unconventional joke weapons like the "Pretty Princess Wand." Relationships reveal nuance: she perceives Nohime in a motherly light, pities Ranmaru Mori as a child forced into war, and shares a pivotal dynamic with Date Masamune. Their encounter during her despair over samurai oppression resulted in renewed commitment to fight for peasant futures after he promised nationwide peace.

In the school-themed reinterpretation, her revolutionary role transitions to cafeteria staff. The adaptation maintains her core identity within the academy's daily operations.