Ghostly neutrino particles continue to bring surprises to fundamental physics, from
their existence to the phenomenon of neutrino oscillation, which implies their nonzero
masses. Their exact masses, among the most curious unknowns beyond the Standard Model of
particle physics, can soon be probed by the joint analysis of upcoming cosmological
surveys including the Rubin Observatory LSST, PFS, Euclid, Simons Observatory, CMB-S4,
and LiteBRID. In this talk, I will discuss ongoing works studying the effects of massive
neutrinos and will draw a roadmap towards discovering the neutrino mass over the next
decade.