My main research interest is about the life of the massive galaxies in the Universe. As the population of galaxies that started to assemble at the dawn of Cosmic history, they carry invaluable information that can greatly help us extend our knowledge of galaxy formation and evolution. Using both photometric and spectroscopic information collected from ambitious project like the Hyper-Suprime Camera survey and MaNGA, I will try to shed new light on the structural evolution, mass-accretion, and star-formation history of these fascinating galaxies.