We are entering an era of high-precision neutrino oscillation experiments (T2HK, DUNE), which potentially hold answers to some of the most exciting questions in particle physics. These future scientific discoveries require a precise knowledge of neutrino-nucleus interactions for a wide range of energies and nuclear targets, mainly medium-mass nuclei like oxygen and argon. Presently, this goal is far from being reached due to the simplistic nuclear models used in experimental analyses performed with the Monte Carlo (MC) event generators. In view of these needs, “NU 4 ν: nuclear ab initio methods for neutrino physics” gives an insight from more fundamental nuclear studies and delivers consistent theoretical predictions.