This lecture by the instructor covers the concept of Wash-in Lepto(flavor)genesis, focusing on topics such as baryon asymmetry of the Universe, baryogenesis, electroweak sphalerons, chemical equilibrium in the electroweak phase, flavor effects in leptogenesis, and higher temperatures. The presentation delves into the Boltzmann equation, gauge-field production, fermion production, viable parameter space, and opportunities for model building. It also discusses wash-in leptogenesis after axion inflation, the generalization to even higher temperatures, and the final baryon asymmetry. The lecture concludes with a discussion on the new paradigm for the baryon asymmetry of the Universe, wash-in leptoflavorgenesis, and the observable consequences and next steps in the field.