Poison for the Moon, Medicine for the Night Volume 1 Opens Digital Preorders for December 15

Poison for the Moon, Medicine for the Night, known in Japanese as 『月に毒、夜に薬』, has entered its preorder phase. Inori. announced on September 27, 2026 that reservations for the digital first volume have begun, with the book planned for a December 15, 2026 release and editions targeting Japanese, English and German readers.

The GL fantasy novel is written by Inori., creator of I'm in Love with the Villainess, with Komizuki / 古弥月 providing the illustrations. The preorder announcement also revealed a new opening illustration showing Lamica Alucard falling from the sky as Niko reaches out to catch her, capturing the exact encounter that starts their story.

Quick Summary

• Japanese title: 月に毒、夜に薬
• Romanization: Tsuki ni Doku, Yoru ni Kusuri
• English title: Poison for the Moon, Medicine for the Night
• Volume: 1
• Japanese subtitle: 死にたい暗殺者と、死を望まれる吸血姫
• English subtitle: An Assassin Who Longs for Death and a Vampire Marked for Death
• Format: GL fantasy novel / light novel
• Author: Inori. / いのり。
• Illustrator: Komizuki / 古弥月
• Kobo-listed publisher: Dokico
• Initial announcement: June 25, 2026
• Digital preorder announcement: September 27, 2026
• Japanese digital release: December 15, 2026
• English digital release: December 15, 2026
• Planned language editions: Japanese, English and German
• Japanese Rakuten Kobo price: ¥800 including tax
• English edition price on Japanese Rakuten Kobo: ¥1,848 including tax
• Japanese-edition language: Japanese
• English-edition language: English
• Japanese Kobo product number: 1230010407363
• English Kobo product number: 1230010407349
• German title: Dem Mond das Gift, der Nacht die Medizin
• German publisher: Dokico
• German translator: Cleo Holdkamp
• German standard paperback price: €20
• German Limited Edition price: €65
• German Supporter Edition price: €90
• German physical date shown by some retailers: December 29, 2026
• German release-date status: should be distinguished from the author's December 15 simultaneous-publication plan
• Protagonist: Niko
• Niko's public profession: apothecary
• Niko's secret profession: contract assassin
• Second lead: Lamica Alucard
• Lamica's identity: vampire princess
• Setting: a world sealed in night for more than one hundred years
• First encounter: Niko catches Lamica as she falls from the sky
• Lamica's appearance: silver hair and ruby-red eyes
• Immediately afterward: Lamica bites Niko's neck because she is hungry
• Niko's next assignment: assassinate the vampire princess
• Character premise: an assassin who longs for death and a princess marked for death
• Tone according to Inori.: dark GL fantasy that is neither too heavy nor too light
• Official PV: available
• PV narration: Tia
• Opening sample: officially available
• New September illustration: Lamica falling toward Niko at the beginning of the story
• Current status: Japanese and English digital preorders are live

PV, Cover and Opening Illustration

Digital Preorders Open for December 15

Inori.'s latest announcement confirms that reservations for the electronic edition of Volume 1 have started.

Rakuten Kobo Japan now lists the Japanese edition, 『月に毒、夜に薬1 ―死にたい暗殺者と、死を望まれる吸血姫―』, for December 15, 2026, priced at ¥800 including tax.

A separate English product page is also live under the title Poison for the Moon, Medicine for the Night - Volume 1: An Assassin Who Longs for Death and a Vampire Marked for Death.

The English edition carries the same December 15 date and is currently listed for ¥1,848 on the Japanese Rakuten Kobo storefront.

Both pages identify Dokico as publisher and are already accepting preorders.

Three Languages Are Planned, but Germany's Physical Schedule Needs a Distinction

Inori.'s latest update says Japanese, English and German editions are planned for simultaneous publication on December 15.

For the Japanese and English digital versions, that matches the dates currently shown by Rakuten Kobo.

The German market is a little more complicated. Dokico already maintains a series page for Dem Mond das Gift, der Nacht die Medizin, crediting Inori. as author, Komizuki as illustrator and Cleo Holdkamp as translator.

Dokico offers a €20 standard edition, a €65 Limited Edition and a €90 Supporter Edition. However, the Supporter Edition page still gives only a Q4 2026 release window rather than December 15 specifically.

German retailers including Thalia and JPC currently list December 29, 2026 for the 250-page standard paperback.

The three-language publication plan can therefore be reported as the author's stated intention, but it would be premature to claim that every German physical edition will be available on December 15.

Niko Catches a Vampire Princess Falling From the Sky

The story takes place in a world that has been sealed in night for more than a century.

Niko lives two lives. To the public, she works as an apothecary; in secret, she accepts contracts as a professional assassin.

One night, a girl falls from the sky and Niko manages to catch her.

The girl has silver hair and ruby-red eyes. Moments after being saved, she sinks her fangs into Niko's neck and simply says that she is hungry.

Her name is Lamica Alucard, princess of a vampire race that harbors the night within itself.

The situation becomes sharply ironic when Niko's next assignment is revealed: assassinate the vampire princess.

That creates the story's central pairing—an assassin who wants death for herself and a princess whose death is desired by others.

The New Illustration Captures the Exact Moment the Story Begins

The preorder announcement also revealed a new interior illustration by Komizuki.

It shows Lamica descending—or more accurately falling—from the sky while Niko stands below and reaches out to receive her.

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推しマスコット

Inori. directly describes it as an illustration of the moment the story begins.

That makes the image more than disconnected promotional artwork. The encounter is the first event linking Niko and Lamica before the vampire revelation and assassination order establish the novel's central conflict.

The visual also preserves the contrast at the heart of the project: darkness and death surround the characters, while their relationship carries the warmth represented by the “poison” and “medicine” imagery in the title.

The Official PV Introduces Inori. and Komizuki's Dark GL Fantasy

The project was first announced by Inori. on June 25, 2026.

In an official report, Inori. described Poison for the Moon, Medicine for the Night as a GL fantasy set in a sunless world, with Niko and Lamica at the center of its story.

Inori. said its reading experience sits roughly between I'm in Love with the Villainess and The Homunculus Tears, resulting in a dark-toned fantasy that is neither overly heavy nor overly light.

A dedicated PV was also produced with Tia providing narration. Beyond serving as the project's main promotional video, it introduces the nocturnal atmosphere and central relationship ahead of Volume 1's release.

Because the PV is a dedicated non-live promotional video for the novel, its footage is used for the article's 12-image visual grid.

Why This Matters

1) Inori.'s new project is being built for multilingual readers from the start

Volume 1 is moving toward Japanese publication while English and German editions are already part of the launch plan.

2) The romantic setup and assassination conflict begin with the same encounter

Niko saves Lamica after she falls from the sky, only to receive an order shortly afterward to kill the person she just rescued.

3) Komizuki visualizes a genuinely important opening scene

The newly shared illustration is not generic promotional art; it depicts the first meeting between Niko and Lamica described in the official synopsis.

4) The digital date is concrete even while German physical distribution differs

Japanese and English digital editions are listed for December 15, while the German paperback schedule currently requires separate treatment.

Light Novel Information

For now, the additional important information currently known includes:

• the Japanese title is 月に毒、夜に薬
• Dokico uses the romanization Tsuki ni doku, yoru ni kusuri
• the English title is Poison for the Moon, Medicine for the Night
• Volume 1 uses the subtitle An Assassin Who Longs for Death and a Vampire Marked for Death
• the Japanese subtitle is 死にたい暗殺者と、死を望まれる吸血姫
• the author is Inori.
• the author's Japanese name is written いのり。
• illustrations are by Komizuki / 古弥月
• the work was announced on June 25, 2026
• Inori. describes it as a GL fantasy novel
• its setting is a world that has lost the sun and remains in darkness
• Niko is one of the protagonists
• Niko publicly works as an apothecary
• Niko also works as an assassin
• Lamica Alucard is the other central protagonist
• Lamica is a vampire princess
• their meeting begins when Lamica falls from the sky
• Niko catches Lamica before she hits the ground
• Lamica then bites Niko's neck because she is hungry
• Niko subsequently receives an order to kill the vampire princess
• the Japanese digital edition is scheduled for December 15, 2026
• the Japanese Kobo price is ¥800 including tax
• the Japanese Kobo product number is 1230010407363
• the English digital edition is also scheduled for December 15, 2026
• the English edition is listed at ¥1,848 on Japanese Rakuten Kobo
• the English Kobo product number is 1230010407349
• Dokico is listed as publisher on both product pages
• the author's announcement states plans for Japanese, English and German publication
• the German edition is titled Dem Mond das Gift, der Nacht die Medizin
• the German translator is Cleo Holdkamp
• the regular German paperback uses ISBN 978-3-98745-461-5
• the standard German paperback contains 250 pages
• Dokico prices the regular edition at €20
• the Limited Edition is listed at €65
• the Supporter Edition is listed at €90
• the Supporter Edition uses a hardcover format
• the Supporter Edition includes a 90 × 40 cm deskmat
• it includes a DIN A5 acrylic board
• it includes two exclusive bonus stories
• it includes an exclusive T-shirt
• Dokico still lists Q4 2026 for the Supporter Edition
• Thalia currently lists December 29, 2026 for the regular paperback
• the German physical date is therefore not automatically treated as identical to the December 15 digital date
• an official PV is available
• Tia narrates the official PV
• an official opening sample is also available
• the latest artwork shared by Inori. depicts Lamica falling toward Niko
• the exact status URL for the September 27 preorder post could not be independently verified through web indexing
• no X status URL has therefore been invented for that post
• official author updates are available through Inori. Official X
• the project account is available through Project TsukiYoru Official X
• the initial announcement is available through the Inori. Initial Official X Announcement
• the PV is available through the Poison for the Moon, Medicine for the Night Official PV
• the Japanese preorder is available through Rakuten Kobo Japanese Edition
• the English preorder is available through Rakuten Kobo English Edition
• the German edition is available through the Dokico Official Series Page
• German paperback details are available through the Thalia German Edition

Closing

Poison for the Moon, Medicine for the Night has now moved from announcement to concrete preorders, with the Japanese and English digital editions both confirming a December 15, 2026 launch. Komizuki's new illustration also takes readers directly to the first moment shared by Niko and Lamica.

The three-language plan remains an important part of the launch, although Germany's physical schedule should currently be treated separately from the confirmed digital date. Further details on distribution, additional retailer listings and the final schedule for each format remain subject to future official updates.