  We present a photometric, spectroscopic, asteroseismic, and evolutionary
analysis of the Algol-type eclipsing binary KIC 12268220. We find the O'Connell
effect and anticorrelated eclipse timing variations in the Kepler light curve,
revealing the presence of large starspots. Radial velocities and atmospheric
parameters are obtained from ground-based spectroscopic observations. Combined
with the radial velocity measurements and Gaia-derived total luminosity, our
light-curve modeling yields the solution of the physical parameters for both
the primary and secondary components. We find 14 independent frequencies
arising from the $\delta$ Scuti primary, and the observed frequencies agree
with the frequency range of unstable modes from nonadiabatic calculations.
Based on the conclusion from previous literature, we run a grid of models to
study the evolution process of our system. The evolutionary tracks of our model
suggest that the low-mass ($\sim 0.23\,M_\odot$) evolved secondary shows a
similar evolutionary state to the R CMa-type system, which might evolve to an
EL CVn system.
