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. Or not.

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!!Tropes:

%%* AdorableAbomination
* CuteMonsterGirl: Horribly subverted; the cute appearance is an act; and she ultimately sacrifices Mizuki to her mother and shapeshifts into her.
* DownerEnding: [[spoiler:Mizuki is eaten by the spider's mother, and the spider-child masquerades as Mizuki without anyone being the wiser.]]
%%* GiantSpider
* HistoryRepeats: The same events happened to the monk. The current day cast even read about it.
%%* ImTakingHerHomeWithMe
* LuredIntoATrap: Pay close attention to the old bookkeeper's wording. [[spoiler:Furthermore he seems nonplussed 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.]]
%%* TheScorpionAndTheFrog
* TreacherousAdvisor: [[spoiler:The old bookkeeper knew what was going to happen.]]
%%* {{Yokai}}

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