The story reflects Iweala’s interest in examining the intersection of personal and cultural identity. As a first-generation Nigerian-American himself, Iweala draws from his own background to portray the challenges faced by children of immigrants in reconciling their heritage with their lived experiences in America.

Family and Cultural Clashes
Niru's revelation of being gay causes a break with his deeply religious and traditional Nigerian parents, highlighting the generational and cultural divides between them. His parents force him into conversion therapy, unable to accept his sexuality.

Race and Immigration Experience
As a first-generation Nigerian immigrant in the U.S., Niru grapples with issues of racial identity, societal expectations, and the pressures his parents face to prove themselves in their adopted country. The novel provides insights into the complexities of the immigrant experience.

Father-Son Relationship
A poignant thread running through the narrative is the irregular bond between Niru and his overbearing father. Their relationship is strained by Niru's sexuality, which his father views as a moral failing, leading to emotional abuse and rejection.

While tackling heavy themes, "Speak No Evil" is ultimately a powerful coming-of-age story that explores the nuances of identity, family dynamics, and the challenges faced by LGBTQ+ youth from traditional backgrounds.

Overall, "Speak No Evil" has been noted for its poignant portrayal of the challenges of being true to oneself while negotiating cultural, familial, and societal pressures. It offers a thought-provoking perspective on issues of race, sexuality, and acceptance, making it a significant work in contemporary literature.