Unification and Texture Universality: The Essence of Hermiticity

A unified framework sheltering the type-I Dirac seesaw, based on the $Δ(27) \times Z_7 \times Z_{5} \times Z_4 \times Z_3$ symmetry, is proposed, preserving the naturalness of Yukawa couplings. It helps to visualize mass matrices within the lepton and quark sectors in terms of \textit{three universal parameters}: $Σ_1$, $Σ_2$, and $Σ_3$, highlighting that the down-type quark and light neutrino mass matrices exhibit a \textit{Hermitian} texture.