Early childhood education (ECE) settings in Aotearoa New Zealand are becoming increasingly ethnically superdiverse. This article draws on a research project that examined the cultural challenges that Japanese children sometimes encounter in New Zealand ECE contexts which was undertaken for my Doctor of Education. Data were analysed using a conceptual framework developed from five key notions that apply to third-culture individuals (TCI). The experiences of one child in this project and the tensions he experienced negotiating his self-identity as a Japanese child are described and their impact on his sense of belonging to the group of children at the centre is considered. The findings revealed that, despite the good intentions of teachers, the child's Japanese cultural identity, and his attempts to share it, were frequently challenged by his teachers' lack of cultural knowledge about Japan. I argue that these experiences resulted in complex situations for both the Japanese child and his teachers.