Hirano attends an all-boys school where he serves as a dormitory resident assistant, tasked with supervising younger students. Due to his delinquent-like appearance bleached hair, multiple piercings, and a somewhat intimidating aura he is often misunderstood by those who don’t know him well. However, those close to him recognize Hirano as someone incredibly dependable, protective, and kind-hearted.

In Sasaki and Miyano, Hirano is a close friend and confidant of Masato Sasaki, often providing him with advice and support regarding his budding relationship with Yoshikazu Miyano. In Hirano and Kagiura, his relationship with his new first-year roommate, Akira Kagiura, becomes the focus, depicting Hirano’s struggle to understand his own deepening feelings.

Hirano has a tall and athletic build, with short, choppy blond hair and pierced ears, giving him the appearance of a delinquent. He typically wears the school uniform in a slightly disheveled manner loosened tie, untucked shirt but never intentionally violates school rules. His sharp features and fierce expressions often mask his gentle personality, leading to frequent misunderstandings.

Despite his tough look, Hirano often blushes easily and shows vulnerable expressions, especially when flustered by emotional or personal situations.

Hirano is straightforward, responsible, and fiercely loyal. Though he may appear rough and intimidating, he is actually deeply empathetic and cares intensely about the well-being of his friends. He often acts as a reliable big brother figure, offering advice, protection, and a listening ear when needed.

Hirano can be surprisingly shy when it comes to his own emotions, particularly romantic ones. He has a strong sense of justice and fairness, dislikes dishonesty, and tends to act impulsively when he feels someone is being treated unfairly. His emotional honesty and awkwardness in unfamiliar situations make him both endearing and relatable.