10 : A Sound Argument -

: A small-scale display of the Wall Titans' power to deter world invasion.

: The episode highlights the growing instability of Eren, who has grown cold and detached, alarming his closest friends, Mikasa and Armin. 10 : A Sound Argument

Set two years before the present-day conflict, the episode explores the introduction of foreign diplomacy to Paradis Island and the tragic weight placed on Queen Historia. The Visit from Hizuru : A small-scale display of the Wall Titans'

The "sound argument" of the title refers to the cold logic that sacrificing one individual (Historia) is a necessary evil to save the nation. who has grown cold and detached