Ranmaru Mori serves the Oda clan under Oda Nobunaga as a trickster, consistently engineering compromising situations for Akechi Mitsuhide. These calculated provocations fuel Mitsuhide's mounting resentment and eventual rebellion against Nobunaga.

Demonstrating unwavering loyalty to Nobunaga, Ranmaru devises unconventional and humiliating battle strategies designed to entertain his lord. Examples include forcing Mitsuhide to confront enemies wearing only painted armor and wielding an oversized rifle as a club. While these antics amuse Nobunaga, they intensify Mitsuhide's frustrations. Ranmaru's schemes repeatedly trap Mitsuhide in embarrassing scenarios, further straining their dynamic.

His portrayal remains a consistent agent of comedic chaos, solely focused on provoking Mitsuhide within the Oda hierarchy.