Hiroko Otake's artwork centers around two primary themes: butterflies and flowers. In her pieces, the butterfly symbolizes the "psyche"—a term rooted in the Greek word “ψυχή” (psūkē), meaning "life" in the sense of breath, spirit, soul, and ego. Otake uses butterflies to capture the beauty, brilliance, and spiritual transformation of the soul and mind. Their ability to adapt and evolve with the ever-changing environment resonates with her deeply. Through her artwork, Otake explores what it means to be human, finding inspiration and personal growth in the process. She invites her audience to bring their own experiences to her work, making her art a shared journey of reflection and connection.