 Many have analyzed Attack on Titan as representing " the hopelessness felt by young people in today 's society . " while writer Mao Yamawaki called it a " coming @-@ of @-@ age story of the boys and girls at its core , " with a new mystery every episode . It is these mysteries that critic Tomofusa Kure says amplifies readers ' expectations . The artwork of the manga has been criticized as crude by some reviewers , with Isayama himself admitting his drawings are " amateurish . " However , those same critics stated that after years of serialization , the art has been improving , and Kure believes that had the illustrations been " refined " , it would not have conveyed the " eeriness " that is a key characteristic of the work . In a short review , Jason Thompson noted how the characters conveniently receive " power @-@ ups " to create plot twists , but concluded that these said plot twists and the manga 's post @-@ apocalyptic world are " too good to miss . " 
