Quark and lepton flavor model with leptoquarks in a modular [Formula omitted] symmetry

We propose a quark-lepton model via leptoquarks and modular [Formula omitted] symmetry. Since the neutrino mass is induced at one-loop level mediated by down quarks as well as leptoquarks, we have to explain lepton and quark masses and mixings with a single modulus [Formula omitted]. Here, we find predictions for lepton and quark sectors with unified modulus [Formula omitted], and show several constraints originating from leptoquarks.