Kill Time Communication Publishing
Kill Time Communication Publishing is a Japanese manga publisher operating the Comic Valkyrie web magazine and Valkyrie Comics print/digital imprint, focused on seinen isekai and fantasy titles for individual readers.
- Company typePrivate
- Founded1995
- HeadquartersTokyo, Japan
- Headcount11–50
- GTM typeB2C
- OfferingDigital Commerce or Content
What Kill Time Communication Publishing does
Kill Time Communication Publishing Co. (株式会社キルタイムコミュニケーション), founded November 30, 1995 and headquartered in Chuo-ku, Tokyo, is a privately held Japanese manga publisher operating the Comic Valkyrie (コミックヴァルキリー) web-magazine platform and the Valkyrie Comics (ヴァルキリーコミックス) print and digital imprint, with a companion sub-imprint Comic Brise (コミックブリーゼ) hosting cross-publisher collaborations. The company focuses on seinen-leaning isekai, fantasy, romance, horror, and comedy serialization, and is the source publisher behind commercially successful properties including Maou no Hajimekata THE COMIC (cumulative 1 million+ copies) and Astroking (370,000+ copies), with active adaptation pipelines into anime and TV drama.
The core technology stack is a web-based publishing platform — the Web Valkyrie online magazine plus KimiComi for serialized chapter hosting — combined with broad cross-platform e-book distribution through DMM Books (priority/pre-release access), BOOK☆WALKER, Kindle, and Comicoco, alongside physical retail through major otaku bookstore chains (Toranoana, Melonbooks, Animate, Gamers, WonderGOO, COMIC ZIN) and e-commerce storefronts (Amazon Japan, Rakuten). The publisher has also built a content-acquisition funnel via the co-developed Isekai Manga Original Story Award with the Shousetsuka ni Narou web-novel platform (announced 2023-03-31).
Revenue is generated through three primary streams: physical manga/comic book sales (one-time purchase, ¥630-900 before tax per volume), digital e-book sales via DMM/BOOK☆WALKER plus serialized access through the web magazine, and light-novel/novel publication. Marketing is anchored on seasonal retail fairs with exclusive store bonuses (illustration cards, tapestries, clear files), YouTube PV/voice-comic content, Twitter engagement, Tokyo Metro Akihabara station signage, and an AnimeJapan 2024 nomination push, while cross-promotions include the DIVINE CROSS TCG and an active anime/drama adaptation pipeline. The company operates with 11-50 employees and ¥10 million in registered capital, indicating a deliberately lean operating model.
Kill Time Communication Publishing firmographics
Firmographics- Name
- Kill Time Communication Publishing
- Legal name
- 株式会社キルタイムコミュニケーション (KILL TIME COMMUNICATION PUBLISHING Co.)
- Website
- https://comic-valkyrie.com
- Company type
- Private
- Founded year
- 1995
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Kill Time Communication Publishing is a Japanese manga publisher operating the Comic Valkyrie web magazine and Valkyrie Comics print/digital imprint, focused on seinen isekai and fantasy titles for individual readers.
- Ownership category
- akta.pro rank
Kill Time Communication Publishing industry classification
Industry- Product category
- Manga Publishing
- NAICS
- Book Publishers (51313), Book Publishers (513130), Periodical Publishers (513120)
- SIC
- Books: Publishing Or Publishing & Printing (2731), Periodicals: Publishing Or Publishing & Printing (2721)
- akta.pro primary industry
- Adult/Seinen/Josei Comics Publishing (MPAJAGAJ)
Keywords
Where Kill Time Communication Publishing is headquartered
LocationHeadquarters
- HQ city
- Tokyo
- HQ country
- Japan
- HQ region
- Asia
Offices1 record
Markets served
Kill Time Communication Publishing business model
Business model- GTM type
- B2C
- Offering type
- Digital Commerce or Content
- Cost components
- Operations, Personnel, Marketing or Sales, Supply Chain, Technology or R&D
Revenue model
- Physical manga/comic book sales: Sale of print manga volumes (ヴァルキリーコミックス) through bookstore partners and online retailers. Single volumes priced at approximately 630-900 yen (before tax) per volume.
- Digital e-book sales: Sale of digital manga volumes through DMM Books, BOOK☆WALKER, and other e-book platforms. Also includes web magazine subscriptions and serialized chapter access via KimiComi platform.
- Light novel and novel sales: Publication of light novel adaptations and original novels, including related books for comic adaptations (e.g., ビギニングノベルズ, ファンタジア文庫, ファミ通文庫 titles).
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| One time/ perpetual license | Pay-as-you-go | Physical manga volumes |
| Subscription | Monthly | Web magazine access |
Go-to-market motion1 record
Distribution channels5 records
Marketing channels6 records
Kill Time Communication Publishing product offering
Product offeringCore offering
Kill Time Communication Publishing is a Japanese manga and light novel publisher that releases serialized fantasy, isekai, romance, horror, and comedy titles through its Comic Valkyrie web magazine and Valkyrie Comics print and digital imprint. Compiled volumes are sold at partner bookstores (Toranoana, Melonbooks, Animate, Gamers, WonderGOO) and major e-commerce/e-book platforms (Amazon Japan, Rakuten, DMM Books, BOOK☆WALKER, Kindle), with the company also operating the KimiComi platform for digital serialization.
Product overview
Kill Time Communication Publishing operates a portfolio of digital and print manga publishing products centered on the Comic Valkyrie (コミックヴァルキリー) web magazine platform, supplemented by the Valkyrie Comics (ヴァルキリーコミックス) print and digital comic book imprint. Serialized manga chapters are released through the Web Valkyrie (ウェブヴァルキリー) web magazine and distributed via the Kimicomi platform. Selected series are also featured in cross-publisher collaborations with Comic Brise. The company publishes a broad catalog of manga series spanning multiple genres including isekai/fantasy, romance, horror, and comedy, ranging from ongoing serialized works to completed arcs. Individual series are organized into a published series catalog (既刊シリーズ一覧), with each series having dedicated product pages linking to physical and digital retail channels.
Differentiator
Problem solved
Functional benefit
Brands
- コミックブリーゼ: A sub-imprint of Kill Time Communication Publishing hosting serialized manga works such as 婚約破棄の十分前に、前世を思い出しました and 王子様なんて、こっちから願い下げですわ！
Products and services
- Comic Valkyrie (コミックヴァルキリー)
Quantifiable outcome
- 『魔王の始め方 THE COMIC』 — over 1 million copies in circulation
- +2 more outcomes
Companies that use Kill Time Communication Publishing
Customer profileSegments1 record
Ideal customer profiles1 record
Kill Time Communication Publishing technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Kill Time Communication Publishing partnerships and signals
Strategic signalPartnerships
Six partnerships are on record, tiered core and minor.
- 小説家になろう (Shousetsuka ni Narou)coreKill Time Communication and 小説家になろう jointly operate the コミックヴァルキリー・コミックブリーゼ「異世界漫画原作大賞」(Isekai Manga Original Story Award), soliciting web novel submissions for manga adaptation. This partnership provides Kill Time Communication with a pipeline of proven web novel content for manga adaptation, while giving 小説家になろう writers a path to published manga.
- Nicovideo / ニコニコ漫画 (Niconico Manga)minorComic Valkyrie titles are distributed on ニコニコ漫画 platform. Special promotional events such as the 2024 Spring Manga Festival featured increased free episode releases on Nicovideo for select titles like 『異世界喰滅のサメ』.
- DMMcoreDMM Books serves as a primary e-book distribution platform for new monthly releases, often with priority/pre-release access (先行配信) for コミックヴァルキリー titles. Exclusive promotional campaigns and fairs are hosted on the DMM Books platform.
- AKIHABARA ゲーマーズ (Gamers Akihabara)minorIn-store promotional events at Gamers Akihabara including复制場面写展 (reproduction scene exhibitions) and 2-choice card challenges for 『異世界喰滅のサメ』.
- DIVINE CROSS TCGminorCollaborative TCG promotion where DIVINE CROSS PR cards were distributed with Kill Time Communication comic volumes, and Comic Valkyrie participated in the DIVINE CROSS tournament event.
- Melonbooks (メロンブックス)coreMelonbooks is a major bookstore partner offering exclusive bonuses for コミックヴァルキリー titles, including illustration cards, posters, clear files, and limited edition campaigns (e.g., 『ヤンデレ妹に愛されすぎて子作り監禁 THE COMIC』 B2 tapestry). Melonbooks also hosts online and in-store special campaigns.
Scale indicators5 records
Recent moves6 records
Expansion highlights5 records
Kill Time Communication Publishing competitors and assessment
Company assessmentBroad incumbents
- Kadokawa: Major Japanese publishing conglomerate operating ComicWalker and numerous manga imprints including Fujimi Shobo. Competes broadly in the isekai manga space with significantly larger author rosters, marketing budgets, and cross-media production capacity.
- Shueisha: Japan's largest manga publisher (Shonen Jump, Jump Books) with a dominant position in serialization and digital distribution (Manga Plus). Represents the upper-bound competitive threat in the Japanese manga market across all demographics including isekai.
- Square Enix (Manga Division): Publishes seinen manga through Gangan Comics and operates Manga UP! digital platform. Competes in fantasy/iseai manga with cross-media synergy from game and anime properties.
- Media Factory: Kadokawa subsidiary publishing seinen manga and light novels (MF Comics, Comic Flapper, MF文庫J), with comparable fantasy/isekai focus but operating at a larger scale as part of the Kadokawa conglomerate.
- Fujimi Shobo: Kadokawa subsidiary publishing seinen manga and light novels (Dragon Magazine, Monthly Dragon Age), with substantially larger resources but directly competing in the isekai/fantasy manga and light novel adaptation space.
Direct peers
- Ichijinsha: Mid-size Japanese manga publisher (Comic Zero Sum, Comic Rex) specializing in seinen and fantasy titles, comparable in size and editorial focus to Kill Time Communication with similar web magazine distribution strategies.
- Earth Star Entertainment: Japan-based manga and light novel publisher focused on fantasy and isekai content through its Comic Earth Star web magazine, operating a similar digital-first publishing model targeting the same seinen/young adult otaku demographic.
- Hobby Japan: Japanese publisher of seinen manga, light novels, and tabletop games with web magazine operations (Comic HJ Web, HJ文庫), serving a directly overlapping fantasy/isekai audience with multi-channel print and digital distribution.
- Gentosha: Japanese publisher operating Comic OGYAAA! and other web manga platforms for seinen content, with similar small-to-mid publisher scale and digital-first editorial approach targeting adult manga readers.
- Mag Garden: Japanese manga publisher (Monthly Comic Blade, Garden, Mag Comi) focused on fantasy and seinen content with both print and digital distribution, sharing similar genre concentration and target demographics.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights6 records
Customer concentration
Kill Time Communication Publishing social profiles
Digital presenceKill Time Communication Publishing financial estimates
Financial estimateRevenue estimate
Valuation estimate
Kill Time Communication Publishing leadership team
Management profileNumber of profiles
Profiles1 record
Kill Time Communication Publishing funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Kill Time Communication Publishing M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Kill Time Communication Publishing
What does Kill Time Communication Publishing do?
Kill Time Communication Publishing is a Japanese manga and light novel publisher that releases serialized fantasy, isekai, romance, horror, and comedy titles through its Comic Valkyrie web magazine and Valkyrie Comics print and digital imprint. Compiled volumes are sold at partner bookstores (Toranoana, Melonbooks, Animate, Gamers, WonderGOO) and major e-commerce/e-book platforms (Amazon Japan, Rakuten, DMM Books, BOOK☆WALKER, Kindle), with the company also operating the KimiComi platform for digital serialization.
Is Kill Time Communication Publishing a public or private company?
Kill Time Communication Publishing is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Kill Time Communication Publishing founded?
Kill Time Communication Publishing was founded in 1995. It employs 11 to 50 people.
Where is Kill Time Communication Publishing based?
Kill Time Communication Publishing is headquartered in Tokyo, Japan, in the Asia region.
How does Kill Time Communication Publishing make money?
Three revenue lines are on record. Physical manga/comic book sales are the primary driver. The others are digital e-book sales and light novel and novel sales.
Who are Kill Time Communication Publishing's main competitors?
Broad incumbents on record are Kadokawa, Shueisha, Square Enix (Manga Division), Media Factory and Fujimi Shobo. Direct peers are Ichijinsha, Earth Star Entertainment, Hobby Japan, Gentosha and Mag Garden.
Does Kill Time Communication Publishing have an API?
No public API is recorded for Kill Time Communication Publishing.
What industry is Kill Time Communication Publishing in?
Kill Time Communication Publishing's product category is Manga Publishing. Its primary akta.pro industry code is MPAJAGAJ, Adult/Seinen/Josei Comics Publishing. Its NAICS code is 51313 and its SIC code is 2731.