Kasei-Theory I.Non-Closure: Non-Closure Without Openness

This paper presents non-closure within the first system of Kasei-Theory as a non-modal readability maintainability architecture. The paper does not propose a theory of openness, incompletion, unfinished extension, dissolved boundary, unfinished process, suspended configurational continuity, closure failure, non-totality-derived incompletion, openness-derived extension, or transcendental unfinishedness. Instead, it fixes non-closure, configurational non-closure, configurational differentiation, local maintainability, unreadability, formal non-closure, and non-totality as distributed structural positions within constrained local readability maintainability. Non-closure is not treated as openness, incompletion, or unfinished continuity, but as constrained configurational non-closure under which configurational differentiation remains locally maintainable without completed closure, universal openness, suspended continuity, closure failure, or total configurational integration. Non-closure does not establish openness. Non-closure does not establish incompletion. Non-closure does not establish suspended configurational continuity. Non-closure does not establish closure failure. Non-closure remains fixed only as constrained configurational non-closure within readability maintainability. This paper fixes only the local non-closure conditions under which configurational differentiation remains maintainable without transition into universal completion, dissolved boundary continuity, unfinished process, non-totality-derived incompletion, or total configurational stabilization. No subject is presupposed. No open-ended structure is established. No universal continuity structure is secured. No total configurational closure is completed. This paper is part of Kasei-Theory.