The Light-Speed Cycle Hypothesis, authored by Clinton Fisher in June 2025, proposes that the accelerating expansion of the universe is not heading toward heat death or eternal inflation, but toward a cyclical encounter with the light-speed boundary — the same condition that birthed the universe. As the universe accelerates asymptotically toward the speed of light, it dissolves into a state of non-being (the null-state), potentially triggering a collapse and rebirth. This theoretical framework complements and extends the Light-Speed Boundary Hypothesis and offers a fresh interpretation of cosmogenesis and dark energy. This document is part of a larger series of cosmological hypotheses by the same author, including the Observer Threshold Hypothesis and the Jellfold Hypothesis.