Hiragi Sano is a key character in the romantic comedy manga series 'Hanikami Kanojo.' He is a high school student known for his reserved and thoughtful nature, often acting as a supportive friend to the protagonist. Sano's calm demeanor and steady presence make him a reliable confidant, and he frequently provides advice and comfort to those around him. Throughout the series, his interactions contribute significantly to the emotional growth of the main characters and the progression of the plot.