Aquamarine Hoshino is a central character in the series 'Oshi no Ko'. He is a talented and analytical young man who harbors a deep interest in the entertainment industry. Aquamarine, often referred to as Aqua, is driven by a mysterious past and a personal quest for truth. His unique abilities make him a pivotal figure in unfolding the narrative's complex layers. As he navigates the challenges of fame and personal discovery, Aqua's journey is marked by emotional depth and a keen sense of determination, making him a compelling presence in the story.