The first mystery of the series is cleared from such a unique perspective, adding on to the general theme of all great anime (looking at you-Naruto Shippuden) that any person has so many layers and inside each one is such a warm heartfelt and sad history. This episode is one of those that took AOT to legend status (akin to Can't look into his eyes yet, The Defeated, Senshi among other lovely ones )and way further than just a violent saga!