It was published by Square Enix and serialized in the Monthly Gangan Joker magazine from April 2009 to June 2013, with its chapters collected in ten tankōbon volumes.
The story takes place at Seikyou Private Academy: an extremely old school with several buildings, each built at different points in history without care for the existing architecture.
The story revolves around a first-year middle school student, Teiichi Niiya who had just enrolled at Seikyou Private Academy.
At this point Yuuko decides to accept her shadow half and she tells Teiichi her reason for remaining on earth: 60 years ago there was a plague in the town.
There, they performed the ritual and threw Yuuko down into the shrine and to prevent her from escaping, they broke one of her legs and nailed the door shut.
Initially only scared and sad, Yuuko began to slowly die due to lack of food, water and her injury.
Teiichi becomes forlorn as once she vanishes the old school building under which her body is located is demolished and people begin to forget about the 'Yuuko-san' rumors.
So he creates a new set of stories about how the six ('seven') mysteries are actually tales of her past, how she was consumed with hate but forgave everyone and how she is now a guardian of the school protecting everyone.
He believes that he became a regret for her so at the last second she stopped passing on but is now trapped in a weakened form as her base; the old school building and her body has been removed.
Unbeknownst to anyone at the time, she cannot harbor negative feelings and as a result, she shifts them and the memories associated with them to "Shadow-Yuuko", who, like in the manga, was already holding Yuuko's grudge against those who sacrificed her.
Her injury is not caused by the villagers, but rather by being thrown down the stairs to the shrine and her sister had no involvement with her death; in fact, she earlier rebuffed Yuuko for having ideas of sacrificing herself.
Teiichi initially learns the past himself, which results in Yuuko being unable to see or hear him, until he talks to Shadow-Yuuko and reconciles the two as the same person.
Written and illustrated by the manga artist duo Maybe [ja], they first published two one-shots in Square Enix's Gangan Powered on April 22 and October 22, 2008.
[a] Dusk Maiden of Amnesia was later serialized in Square Enix's Monthly Gangan Joker from April 22, 2009,[8] to June 22, 2013.
[30] Despite finding Momoe Okonogi a nuisance for ruining some of the show's dramatic moments, she praised the different art styles used throughout the episodes and the various supernatural elements that carry an atmospheric tone, saying that "On the whole, Dusk maiden of Amnesia is greater than the sum of its parts.
[31] While finding problems with the plot wrapping up too quickly and some minor artistic flubs, Martin praised the series for melding different genre elements seamlessly, its mood-setting musical score and its handling of the main cast, saying that "In all, the anime adaptation of Dusk maiden of Amnesia is a good example of economy of action.
"[31] Allen Moody from THEM Anime Reviews was at arms length with the series at first with its harem elements and "gratuitous fanservice", but came to appreciate the supernatural horror aesthetics used throughout the scenes and the female cast for having distinguished artwork and character development, concluding that: "Overall, this is not a great series, but it is often an interesting one, and the ladies are only occasionally required to surrender their dignity, for which I am very grateful.