  We study inclusive $b \to s\gamma$ decay in the context of electron EDM and
baryogenesis. The general 2HDM (i.e. without $Z_2$) that possesses an extra set
of Yukawa matrices can drive electroweak baryogensis via $\lambda_t {\rm
Im}\rho_{tt}$, where $\rho_{tt}$ is the extra diagonal top Yukawa coupling,
with the $e$EDM constraint evaded by an exquisite flavor cancellation
mechanism. We touch upon the current status of direct search for exotic $H$,
$A$ and $H^+$ scalars at the LHC, while for the plethora of flavor observables
in $g$2HDM, we focus on $b\to s\gamma$, pointing out $chiral$ enhancement of a
$\rho_{tt}\rho_{bb}$ effect in $g$2HDM, which can bring in a CPV phase. We
first explore the inclusive ${\cal B}(b \to s\gamma)$ rate, then showcase the
progress that Belle II can make in the future, illustrating a potential
3$\sigma$ effect for the inclusive $B^+ \to X_s^+\gamma$ vs $B^0 \to
X_s^0\gamma$ CPV rate difference, $\Delta A_{\rm CP}$. Especially if $e$EDM
emerges swiftly, perhaps one should pursue further upgrade beyond Belle II.
