- Angst? What Angst?: Kumoko was a lonely, isolated girl before being reborn as a spider, where she was nearly eaten by her new mother and later forced to kill her brother in self-defense. She responds with aplomb, accepting what she's become and focusing on making the most of the situation. This extends to most situations she finds herself in throughout the story. Even her moral quandaries when it comes to killing and eating humans are short-lived.
- Eight Deadly Words: A complaint leveled against the story, especially during the Prolonged Prologue. Kumoko is not an especially engaging character on her own and it takes 120 chapters before she ever meets another intelligent being, and even then the conversation is short. Many readers give up early as a result.
- Moe: An Adorkable spider with the mind of a Hikikomori highschool girl? Pretty much the reason why the series got noticed. The fact that the manga made her a bright pink with a more cartoonish art style accentuates it.
- Moral Event Horizon: Buirimis's method of "earning Razraz's loyalty", by magically compelling him to kill and eat his beloved sister universally destroyed any sympathy the readers had for him, if not for the sheer atrocity of the act, then by the stupidity of it, in violating one of the biggest rules on the Evil Overlord List. "When I have a monster or powerful animal in my thrall, I will treat it kindly, with decency and respect, so in the event that the control is broken, it will not immediately turn on me." In fact, most thought him dying at Wrath's hand was getting off way too easy.
- Rooting for the Empire: You'll be hard pressed to find readers who are bigger fans of Shun than Kumoko/Shiraori. He's pretty clearly morally in the right, but the dorky spider girl is so sympathetic and funny that most people overlook her numerous flaws.
YMMV / Kumo Desu Ga, Nani Ka?