Kojirō is a supporting character from the anime Hanabichan The Girl Who Popped Out of the Game World. He is a childhood friend of the main human character, Musashi Shinonome, and works as the manager of a nearby pachinko hall called Parlor Hero, which puts him in direct competition with Musashi’s inherited establishment, Shitamachi God Heaven. His personality is marked by a outwardly confrontational or quarrelsome demeanor toward Musashi, a reflection of their business rivalry. However, this surface attitude masks a genuinely kind and hardworking nature; he is a diligent person who takes his responsibilities seriously and strives to succeed in his own right. His primary motivation appears to be the successful operation of his parlor and a sense of pride in his work, while his relationship with Musashi provides a mix of competitive friction and underlying mutual respect typical of long‑time friends. Over the course of the story, their dynamic may evolve from simple rivalry toward a more cooperative understanding, as both are invested in the local pachinko scene. As an ordinary human, Kojirō possesses no supernatural abilities; his strengths lie in his business acumen, perseverance, and the dedication he brings to managing his own establishment.