Egoistic Flowers originates from Touhou Hyouibana Antinomy of Common Flowers, the 2017 fighting game developed by Twilight Frontier with Team Shanghai Alice. It serves as the theme for final boss duo Joon Yorigami, a pestilence god who spreads wealth, and her elder sister Shion, a poverty god who brings misfortune. The contrasting pair became popular with Touhou fans for their designs and chaotic dynamic, and arrange versions of their theme circulate widely in fan videos, live performances and short soundboard clips like this live sample.