Yoichi Isagi's background plays a crucial role in shaping his ambitions. Growing up without much recognition or success in his previous soccer team, Yoichi's experiences of being overlooked and underestimated fuel his ambition to prove himself and become a top-level soccer player. Additionally, his strong work ethic and determination are influenced by the challenges he faced in his past, driving him to constantly strive for improvement and success in the sport. Overall, Yoichi's background serves as a motivating force that propels him towards achieving his ambitions in soccer.