That Time I Got Reincarnated as a Slime, Vol. 14 (light novel)

Having easily thwarted the Eastern Empire's invasion, Rimuru wishes to endthe
conflict once and for all and therefore heads for the imperial capital totake out the
source. Meanwhile, Yuuki has worked his way up inside the Empirewith the intention to
stage a coup d'état and usurp the throne.Rimuru, however, comes to find that the
Empire's true power is on a wholeother level from what he’s seen so far...