  We propose a radiative seesaw model based on a modular $A_4$ symmetry, which
has good predictability in the lepton sector. We execute a numerical analysis
to search for parameters that satisfy the experimental constraints such as
those from neutrino oscillation data and lepton flavor violations. Then, we
present several predictions in our model that originate from the modular
symmetry at a fixed point as well as fundamental region of $\tau$.

High Energy Physics - Phenomenology