"Busu Nante Iwanaide" is a romantic comedy manga that explores themes of self-esteem, societal beauty standards, and the complexities of relationships. The story centers on Kyouya Asahina, a high school student who is widely regarded as handsome and popular among his peers. Despite his good looks, Kyouya harbors a deep insecurity about his appearance, believing that people only value him for his looks rather than his personality. This insecurity stems from a childhood incident where he was bullied for being overweight, leading him to develop a fear of being judged solely on his appearance.

The narrative takes a turn when Kyouya meets Chitose Hara, a classmate who is often labeled as unattractive due to her plain looks and lack of social skills. Unlike others, Chitose is indifferent to Kyouya's appearance and treats him with genuine kindness, which intrigues him. As their interactions increase, Kyouya begins to develop feelings for Chitose, appreciating her for who she is rather than how she looks. However, their budding relationship faces challenges, including societal pressures, misunderstandings, and Kyouya's lingering insecurities.

The manga delves into the dynamics of their relationship, highlighting the contrast between external perceptions and internal realities. Kyouya's struggle to reconcile his self-worth with his outward appearance is a recurring theme, as is Chitose's journey toward self-acceptance. The story also introduces secondary characters who add depth to the narrative, such as Kyouya's friends and classmates, who provide varying perspectives on beauty and relationships.

Throughout the series, the plot balances humor with emotional moments, creating a narrative that is both entertaining and thought-provoking. The characters' growth is central to the story, as they navigate the complexities of high school life, personal insecurities, and the evolving nature of their feelings for one another. The manga ultimately explores the idea that true beauty lies beyond physical appearance, emphasizing the importance of inner qualities and genuine connections.