Core Structural Layer: Irreversibility Without Temporality — A Non-Modal Fixation

This paper examines irreversibility without temporality within a non-modal structural framework. Irreversibility is not treated as temporal direction, entropy increase, thermodynamic evolution, or processual asymmetry. Instead, it is articulated as failure of restoration without return or recovery. The paper argues that restoration is not removed but fails to be constituted, and that recovery is not lost but fails to be established. Irreversibility is therefore positioned not as temporal progression, but as non-restoration without causal or temporal grounding. Part of the Core Structural Layer within Kasei-Theory, this paper develops a non-modal account of irreversibility without recourse to process ontology or thermodynamic explanation.