1. The study investigates pion condensation in two-flavor quark matter using the Nambu–Jona-Lasinio model of QCD at finite density. It examines how the electric charge neutrality condition and explicit symmetry breaking via quark masses influence the onset of charged pion condensation. 2. It finds that the equality between the electric chemical potential and the in-medium pion mass persists as a threshold for a second-order phase transition to the pion condensed phase, even when pions are composite particles. Furthermore, the pion condensate is extremely fragile to symmetry breaking via current quark masses, and is ruled out for masses over 10 keV. 3. The study aims to