"Akanabe-sensei wa Tereshirazu" centers on the life of Akanabe, a high school teacher who is highly competent and respected in his professional role but struggles with personal relationships due to his inability to express his emotions openly. His reserved demeanor often leads to misunderstandings, particularly with his students and colleagues, who perceive him as cold and unapproachable. The narrative explores his interactions with those around him, highlighting the contrast between his professional dedication and his personal insecurities.

The story unfolds through a series of episodic encounters, each focusing on different students or colleagues who interact with Akanabe. These interactions often reveal hidden layers of his character, as well as the struggles and growth of the individuals he encounters. A recurring theme is the impact of Akanabe’s unintentional bluntness or emotional distance, which inadvertently challenges those around him to reflect on their own lives and relationships. Over time, subtle changes in his behavior suggest a gradual opening up, though his core personality remains consistent.

Key characters include Akanabe’s students, each with their own distinct personalities and challenges, such as the overachieving but socially awkward student, the rebellious troublemaker, and the quiet, observant classmate. Colleagues, including a fellow teacher who serves as a foil to Akanabe’s stoicism, also play significant roles in the narrative. The dynamics between Akanabe and these characters drive much of the story’s emotional and comedic moments, balancing lighthearted humor with poignant reflections on human connection.

The manga’s structure emphasizes character development and interpersonal relationships, with a focus on how small, often unnoticed actions can have profound effects on others. While the plot is largely slice-of-life, it occasionally delves into deeper themes such as self-worth, the pressures of societal expectations, and the complexities of communication. The narrative avoids heavy drama, instead opting for a grounded, realistic portrayal of everyday life in a school setting, making it accessible and relatable to a wide audience.