"Taiikukaikei Oshiego Gui" centers on the life of Gui, a former delinquent who has turned over a new leaf and now works as a physical education teacher at a high school. Despite his efforts to leave his troubled past behind, Gui’s intimidating appearance and reputation often lead to misunderstandings among students and colleagues. His imposing demeanor contrasts sharply with his genuine desire to guide and mentor his students, particularly those who struggle with their own personal challenges.

The narrative explores Gui’s interactions with his students, each of whom faces unique issues ranging from academic pressure to family problems. Gui’s unorthodox teaching methods and straightforward personality often clash with the school’s more traditional faculty, but his dedication to his students gradually earns their respect. The story delves into themes of redemption, mentorship, and the impact of second chances, as Gui uses his own experiences to connect with and inspire his students.

Key characters include Gui’s students, such as a shy and academically struggling girl who finds confidence through sports, a rebellious boy who mirrors Gui’s younger self, and a star athlete grappling with the weight of expectations. The faculty also plays a significant role, with a strict principal who initially distrusts Gui but later recognizes his value, and a fellow teacher who becomes a close ally and confidant.

The plot is driven by episodic arcs that focus on individual students and their growth, interwoven with Gui’s personal journey as he confronts remnants of his past and strives to prove himself as a capable educator. The series balances moments of humor, drama, and heartfelt emotion, creating a narrative that highlights the transformative power of mentorship and the importance of understanding and empathy in education.