black and white · reverse trap protagonist · amnesiac protagonist
Yachoukitan
夜蝶綺譚
Having lost his memory, Sera Kaoru stops in the forest and visits a strange Western-style house. Read more →Collapse ↑
Having lost his memory, Sera Kaoru stops in the forest and visits a strange Western-style house. Guided by the house's owner, the boy in clothes of black, he descends the long spiral staircase to the basement. There sits a pure white maiden.Crimson eyes and white skin---a breathtakingly beautiful "girl." Sera's job is to distract her from her boredom. He reads a fairytale to her, and upon completing the peaceful job, the boy in black clothes informs him. She is the "ChouTsuki," and Sera was invited to the mansion to be the ChouTsuki's "sacrifice."
[From [Deja Vu](http://www.mangasos.com/dejavu/vn/projects-butterfly.html)]
- Developer
- ZIGZAG
- Length
- 2–2 hrs
Consensus
—
no ratings yet
Time to finish
2–2
hours
Platforms
5
win · lin · mac
Curator reviews
—
awaiting first review
04Tags · ordered by curator score
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Sign in03The book
What the text actually does.
Synopsis, structure, content advisories — editorially written, not machine-extracted.
13The Premise
What you’ll actually read.
Having lost his memory, Sera Kaoru stops in the forest and visits a strange Western-style house. Guided by the house's owner, the boy in clothes of black, he descends the long spiral staircase to the basement. There sits a pure white maiden.Crimson eyes and white skin---a breathtakingly beautiful "girl." Sera's job is to distract her from her boredom. He reads a fairytale to her, and upon completing the peaceful job, the boy in black clothes informs him. She is the "ChouTsuki," and Sera was invited to the mansion to be the ChouTsuki's "sacrifice."
[From [Deja Vu](http://www.mangasos.com/dejavu/vn/projects-butterfly.html)]
14Cultural moment · release cadence
- 2006
Japanese release
Original edition, shipped by the developer.
16Platforms & editions
| Lang | win | lin | mac | and | vnd |
|---|---|---|---|---|---|
| EN | ✓ | ✓ | ✓ | ✓ | ✓ |
| ES | ✓ | ✓ | ✓ | ✓ | ✓ |
| JA | ✓ | ✓ | ✓ | ✓ | ✓ |
| RU | ✓ | ✓ | ✓ | ✓ | ✓ |
| VI | ✓ | ✓ | ✓ | ✓ | ✓ |
Per-platform edition detail (physical / download / fan-patch) ships once catalog.editions lands.
17Cast · anti-spoilered
Character index pending — curator cast sheet not yet written.
18Content advisory
- none
Sexual content
On-screen adult content flagged at the catalog level.
- none
Violence
On-screen violence flagged at the catalog level.
- none
Age rating
Not rated.
19Structural map
Route tree pending — branching not yet mapped by a curator.
20Memorable
Quote selection pending — curator pulls not yet logged.
04What curators say
The discourse around the book.
Long-form reviews, disagreements made visible, what readers keep returning to.
21Featured reviews
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Sign in to review22Velocity · completion · heatmaps
Median time to finish
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Completion rate
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% of readers who reach an ending
Chapter heatmap
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hot spots where readers slow down
23Rating distribution
No ratings yet — histogram draws once at least one reader scores this title.
24Argued takes · where curators disagree
Argued takes will surface where curators stake opposite readings. Requires at least two contradicting reviews before the pairing shows.
25Lists featuring this VN
This title hasn’t been picked up by any public list yet.
26Reading group
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27Recent notes
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28Full archive · 0 more reviews
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05Adjacent reading
Where to go from here.
Overlap by tags, series position, and curator picks. Sponsored sits behind the sage wall.
29Adjacent shelf · by tag overlap · 5 results
31Curator picks
Three curator picks with personal rationale. The pick list populates as curators publish their recommendations.
32Sponsored · publisher partner
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