Madame Lulu commands the Ōni Company, operating cargo zeppelins like the Hagoromo across Ijitsu's wasteland world. She contracts the mercenary Kotobuki Squadron to defend her transports against air pirates. Her persona exudes unwavering confidence, imposing authority, and headstrong resolve in all dealings.

Her leadership demands formal agreements before authorizing squadron assistance, prioritizing contractual obligations and material compensation even in crises. This pragmatic focus stems from fighter plane operational costs and sustaining the company. Despite this business-first stance, she reveals underlying compassion by occasionally permitting pro bono missions when civilian lives face immediate peril. Her interactions with politician Julia are marked by mutual animosity and clashing viewpoints, though both possess similarly strong-willed personalities.

After the critical mission to seal a dimensional hole results in the Hagoromo's destruction, she confronts the total loss of her company's primary asset. In the aftermath, she commits to rebuilding Ōni Company operations from scratch, navigating the resulting logistical and financial challenges. Her dynamic with Hagoromo Captain Saneatsu involves asserting authority over his indecisiveness, though she implicitly acknowledges his dedication during near-sacrificial actions in the final battle.

Throughout the conflict against the Brotherhood of Freedom Union, her role centers on managing transportation logistics and mercenary contracts. Her leadership faces tests from corporate sabotage, resource scarcity, and infrastructure loss. The reconstruction of her company signifies her enduring influence within Ijitsu's trade networks despite severe adversity.