  After the Higgs discovery, the LHC has been looking for new resonances,
decaying into pairs of Standard Model (SM) particles. Recently, the CMS
experiment observed an excess in the di-photon channel, with a di-photon
invariant mass of about 96~GeV. This mass range is similar to the one of an
excess observed in the search for the associated production of Higgs bosons
with the $Z$ neutral gauge boson at LEP, with the Higgs bosons decaying to
bottom quark pairs. On the other hand, the LHCb experiment observed a
discrepancy with respect to the SM expectations of the ratio of the decay of
$B$-mesons to $K$-mesons and a pair of leptons, $R_{K^{(*)}} = BR(B \to K^{(*)}
\mu^+\mu^-)/BR(B\to K^{(*)} e^+e^-)$. This observation provides a hint of the
violation of lepton-flavor universality in the charged lepton sector and may be
explained by the existence of a vector boson originating form a $U(1)_{L_\mu -
L_\tau}$ symmetry and heavy quarks that mix with the left-handed down quarks.
Since the coupling to heavy quarks could lead to sizable Higgs di-photon rates
in the gluon fusion channel, in this article we propose a common origin of
these anomalies identifying a Higgs associated with the breakdown of the
$U(1)_{L_\mu - L_\tau}$ symmetry and at the same time responsible to the quark
mixing, with the one observed at the LHC. We also discuss the constraints on
the identification of the same Higgs with the one associated with the bottom
quark pair excess observed at LEP.
