Common-Sense Monster, Vol. 3

Without warning, Nie-sen has murdered Hiraizumi and replaced her. Yet no one seems to notice that the new Hiraizumi is an imposter. Itou finds herself torn between wanting to preserve everyone s blissful ignorance and being unable to forgive the monster for what they ve done. So she decides to kill Nie-sen...but if she does, will she have to kill her beloved Takahashi too?