Kasei-Theory I.Differentiation: Differentiation Without Comparison

This paper presents differentiation within the first system of Kasei-Theory as a non-modal readability maintainability architecture. The paper does not propose a metaphysics of difference, a theory of comparison, an ontology of opposition, or a framework of measurable distinction. Instead, it fixes differentiation, constrained readability, local maintainability, unreadability, drift, and configurational constraint as distributed structural positions within constrained local readability maintainability. Differentiation is not treated as an explanatory concept, but is fixed as a constrained condition under which configurational differentiation remains locally maintainable without comparison, opposition, or metric completion. Differentiation does not establish comparison. Differentiation does not establish opposition. Differentiation does not establish measurable distinction. Differentiation does not establish metric variation. Constraint does not establish relational separation. Unreadability does not establish absence. Configurational differentiation does