The mc and his wife were soldiers of the Nemesis Corporation, when their daughter was born they wanted to put an identification chip "Trexv1" (like the ones pets have today to know who the owner is), the mc's wife kills the doctor,
the organization gives the order to kill her and the mc did not hesitate to defend her,
and escaped with his wife and daughter.
From then on they are persecuted by Nemesis, in a world where there is no government, only the Law of Nemesis.