Itsuki Saijo, a 15-year-old student born June 27th, 1925, in Japan, commands the Moon Division of the second-generation Imperial Combat Revue in 1940. Her appearance features short black hair and a school uniform accented by a lavender skirt, flap, and thigh-high stockings. A fervent enthusiast of the Imperial Combat Revue, she frequents the Grand Imperial Theatre, immersing herself in its community by engaging staff and patrons during her leisure. Her passion extends to amassing Flower Division memorabilia, particularly bromides, fueling a rivalry with Seijuro Kamiyama as they compete to acquire coveted collectibles. This dynamic reflects her deep admiration for the group, persisting even amid public mockery of their performances.

Within the 1940 narrative, Itsuki stands out as a vocal advocate for the Flower Division during their challenges, critiquing their faltering adaptation of *Momotaro* while defending the members’ latent potential. Her initial suspicion of Seijuro shifts to collaboration as she shares her expertise in theater operations and fan networks.

In the 1941 anime continuity, she joins Hiromi Hongo and Flower Division allies in covertly surveilling Seijuro, Sakura, and Klara during a city excursion. Confronting adversaries Valery Kaminski and Leyla, she witnesses their thwarted interception attempt, later voicing eagerness for future joint missions with the Flower Division. Post-conflict scenes depict her walking through Tokyo alongside Hiromi, underscoring her enduring ties to the group.

Her surname, Saijo, merges the characters for “west” and “castle,” while her given name, Itsuki, is written in hiragana—phonetically neutral but evoking “tree” in kanji. Designed by Noizi Ito, renowned for *Shakugan no Shana* and *The Melancholy of Haruhi Suzumiya*, her visual aesthetic blends a schoolgirl motif into the series’ steampunk backdrop.