Long ago, a Spider {{Yokai}} killed a lot of people; but a brave monk challenged her.

In modern day; a young used bookseller (Suzuri) and his landlord's granddaughter (Mizuki) crack a [[SealedEvilInACan sealed book]] that had an offspring of that spider. The spider takes the form of a young innocent child; and they take care of her.

A heartwarming tale. [[spoiler:Or not.]]


%%* AdorableAbomination
* AnimalsHateHim: Dogs and cats aren't very fond of the spider girl.
* CuteLittleFangs: Which are still sharp enough to draw blood.
* CuteMonsterGirl: [[spoiler:Horribly subverted; the cute appearance is an act; and she ultimately sacrifices Mizuki to her mother and shapeshifts into her.]]
* CutenessProximity: Suzuri can't help but fawn over the little yokai.
* DownerEnding: [[spoiler:Mizuki is eaten by the spider's mother, and the spider-child masquerades as Mizuki without anyone being the wiser.]]
* TheFarmerAndTheViper: Although their relationship is vitriolic at best, Mizuki allows the spider girl to stay in the shop and helps look after her. [[spoiler:She gets killed for it.]]
* GiantSpider: The mother who attacked the village all those years ago.
* HistoryRepeats: The same events happened to the monk. The current day cast even read about it.
* HopeSpot: [[spoiler:Just as they're about to fall into the mother's clutches, Suzuri and Mizuki both land on top of a web overlooking the lake. The spider girl lands beside them and points to her mother below, showing how beautiful she really is... just before severing the web keeping Mizuki suspended.]]
%%* ImTakingHerHomeWithMe
* LuredIntoATrap: Pay close attention to the old bookkeeper's wording. [[spoiler:Furthermore he seems nonchalant about the existence of yokai... probably because he seems to have gone though something similar that Suzuri went through with a different kind of monstergirl.]]
* NatureVersusNurture: [[spoiler:Nature wins... Not that there was even a fight to ''begin'' with.]]
* PlotRelevantAgeUp: [[spoiler:The spider girl appears in an adolescent form when summoning her mother.]]
** [[spoiler:She later stays in the form of a full adult after replacing Mizuki.]]
* RedEyesTakeWarning: The spider girl's eyes are red, and it's usually pretty cute. [[spoiler:Not so much when they start glowing.]]
* {{Yokai}}: The titular character.