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This paper explores the cosmological implications of anisotropic boundary conditions arising from a multiverse composed of multiple Big Bounce domains. We propose that our universe is one such domain within a larger hyper-universe, where interactions with adjacent universes induce anisotropic stiffness along three primary axes. This anisotropy provides a mechanical explanation for the three fermion generations, with the electron, muon, and tauon representing excitations along axes of varying stiffness. Neutrino oscillations emerge naturally as a geometric interference effect within this anisotropic framework, aligning with established phenomena \cite{fukuda1998, ahmad2002}. Additionally, we address anomalies observed by the James Webb Space Telescope (JWST) \cite{xiao2025, ruchika2025}, suggesting that some distant, mature galaxies may belong to adjacent universes with different evolutionary timelines. This model extends the Diffusive Universe framework \cite{FurneGouveia2025_Diffusive} by incorporating multiverse dynamics. Crucially, it proposes a novel mechanism for triggering the cosmological bounce, based on multiverse-induced anisotropic phase transitions. This offers unified solutions to particle physics and cosmological puzzles without invoking dark components or singularities, while providing a potential pathway to avoid the need for primordial inflation.