This paper aims to un-suture common-sense assumptions based on Westphalian International Relations (IR) from South Korea’s non-essentialist and situated perspective, in the context of decolonising IR. Towards this end, the paper methodologically investigates a South Korean novel, A Grey Man, published in 1963 during South Korea’s early post-colonial period at the height of the Cold War. Using a non-Western novel to conduct a contrapuntal reading of Westphalian IR, this paper constructs a different type of worlding, conceptualising ‘the international’ through ‘the cultural’. It explores the following questions: How do ‘yellow negroes’ (the subject race) make sense of themselves and their roles and life-modes in a world defined for them by the white West (the master race)? How do yellow negroes understand and respond to the white West, which is hegemonic in world politics and history? In what ways does the protagonist of A Grey Man resist, engage with, and relate to the hegemonic West, which he has already internalised? In addressing these questions, the paper attempts to access different IR words to think with, such as race, white supremacy, intimacy without equality, sarcastic empathy, and disengagement. These provide an arena in which we can think otherwise, while un-suturing dominant Westphalian IR thinking.