Jun Hase is a male adult character from the anime Fire in His Fingertips 2 -My Boyfriend is a Fireman-. He is a firefighter serving at the Sakuragaoka Fire Station, where his role includes mentoring and working alongside younger colleagues such as Soma Mizuno and Yuki Izumi. At twenty-eight years old, he stands 180 centimeters tall and is characterized by his black, chin-length hair and green eyes.

His personality combines seasoned professionalism with a warm, approachable demeanor. Known for treating women with the utmost gentleness, Jun is described as a feminist whose interactions are shaped by a principle of respectful conduct. He balances a serious, calm competence in high-stakes emergency scenarios with a playful charm and a good sense of humor in more casual settings. This steady, reliable presence helps anchor team cohesion during crises and makes him a person that both colleagues and civilians can depend on.

Jun is physically fit and well-built, which is characteristic of his profession as a fireman. Beyond his duties at the fire station, he enjoys playing darts, frequenting local venues to blend his love for the game with social engagement. Within the narrative, he serves as a senior figure and a supportive colleague to the protagonist Soma Mizuno, offering guidance and steady professionalism. His experience and calm demeanor under pressure are key assets that contribute to the function of his firefighting team, providing a foundation of reliability and sharp competence that others rely upon.