Transition Design has gained attention for sustainability, yet its cultural dimensions remain underexplored. This paper introduces Transition Design for Cultural Inclusivity, examining the halal ecosystem in Fukuoka, Japan, as a case of cultural transition in a non-Islamic context. Using a systemic service design approach, the study maps the current ecosystem, envisions a 2045 inclusive future, and outlines transition pathways. The research contributes by addressing a gap and extending Transition Design into the cultural domain, highlighting its role in fostering inclusive futures.