The official media of "Gekkō no Piasu" focuses on protagonist Shuuichi, a young man suffering dissociative amnesia after a traumatic event. He investigates his fragmented memories through the organization "Piasu" while navigating complex relationships with his sister Aya, childhood friend Rina, and the enigmatic Dr. Kuroki. No references to Hiroshi Takama occur in plot synopses, production credits, or voice actor listings across all provided materials. Hiroshi Takama's background, development, and narrative role are absent from the available documentation.