  Field-induced superconductivity has long presented a counterintuitive
phenomenon and a pivotal challenge in condensed matter physics. In this Letter,
we introduce a mechanism for achieving field-induced superconductivity wherein
the sublattice degree of freedom and the Coulomb interaction are tightly
entwined. Our multipole-resolved analysis elucidates that lifting the
fluctuation degeneracy results in an unconventional Cooper pairing channel,
thereby realizing field-induced superconductivity. This research substantively
augments the exploration of the latent potential of strongly correlated
electron systems with sublattice degrees of freedom.
