/Companies

Samaria

Techstars '24Plug and Play Ventures

Toshima City, JP · 3 employees on LinkedIn · 4 known investors

Find your way into Samaria

Sign up to see every warm intro you have to Samaria

  • Paths you didn't know you had: your email and LinkedIn already hold routes to the Samaria team. We find them for you
  • 2nd- and 3rd-degree connections: the friend-of-a-friend routes that take hours to manually find through your inbox or LinkedIn
  • Answers now, not in days: momentum is everything in a raise. Skip asking around whether someone knows someone

Days of research, done the moment you sign in, with every route ranked by how warm it is.

Samaria operates a manga platform, fan community service, AI tools development, and advertising business targeting manga creators and readers.

Also known as JAPANMEDIA AI · JAPANMEDIAI · Samaria Inc. · 株式会社Samaria

Founders & leadership

YYYuko Yamasaki
Yuko YamasakiFounder · CEOFounder of Samaria, which operates a manga and anime platform (JAPANMEDIA) that combines distribution with generative AI tools for creators, alongside a fan community service and advertising business for manga creators and readers.

Investors · 4

Company profile

researched Sep 2026

Samaria (株式会社Samaria) is a Japanese company developing JAPANMEDIAI, an integrated AI toolset for producing manga and anime. The product is organized around three linked capabilities: story generation, comic book creation and anime production. The story-generation component is built on large language models and follows Japanese storytelling conventions, producing plot structures (kishōtenketsu), episode breakdowns and script-format output, with partial-edit and consistency checking so revisions to one section are reconciled with the rest of the work. The manga component covers scenario adjustment, dividing scripts into pages, and a comic drawing system that reduces the labor involved in layout (name), line art, coloring and storyboard preparation. The anime component supports planning and series composition, matching with specialist creators across art, photography and sound, generation of longer-form animation, and elements such as AI voice, lip sync, BGM and sound effects, together with translation, subtitling and localization for global distribution. Vertical-scroll formatting for smartphones and 32-language translation are described as planned for implementation from 2026.

Alongside the AI tools, the company operates a manga distribution platform that it states handles more than 360,000 paid titles under formal approval and licensing from several hundred publishers. The company positions its approach as combining licensed Japanese manga and anime content with in-house developed AI rather than a wrapper over third-party models, covering the workflow from planning through final production, including in-house server construction.

The registered business lines are a manga platform business, a fan community business, an AI tool development business and an advertising business. Stated capital is 35,507,200 yen and headcount is 28 people including contractors and part-time staff.

Founding story

The CEO, Yuko Yamasaki, studied film aesthetics at university and initially aimed to become an anime director or manga artist, but found that Japanese industry practice at the time assumed drawing ability and offered few divided-labor or script-only roles; after submitting scripts without success she joined an advertising agency. The experience left her questioning why pursuing such careers was so difficult in a country with so much manga and anime. As YouTube and social media made creator careers broadly accessible, she set out to use AI to widen those possibilities and take them global, framing the company's mission as bridging from a generation that had to give up its dreams to one in which anyone can attempt them.

Business model

Samaria combines a licensed manga distribution platform with AI production tooling. The JAPANMEDIA AI service is sold on a prepaid points basis: users buy points that are consumed by individual features, with per-feature point costs published on each feature page and plan pricing published on the service's landing page. Contracts renew automatically on a monthly or annual basis, and a subscription option grants points on each monthly renewal date. Purchased points are non-refundable and non-exchangeable as digital content; subscriptions can be cancelled effective from the next renewal date, and membership withdrawal is a separate procedure. Payments are processed through Stripe, accepting credit cards (Visa, Mastercard, American Express, JCB), debit cards, Apple Pay and Google Pay. The company also lists an advertising business and a fan community business among its operations.

Prepaid points purchased by users and consumed per feature, sold either as one-off point purchases or as an auto-renewing monthly point subscription, alongside annual or monthly auto-renewing service contracts; payment is handled via Stripe. Paid manga content on the distribution platform and an advertising business are further stated revenue lines.

Traction

The platform handles more than 360,000 paid titles with formal approval and licensing from several hundred publishers. Headcount is 28 including contractors and part-time staff, and stated capital is 35,507,200 yen. Recognition includes the HONGOAI 2024 BEST AWARD and AICHI NEXT UNICORN LEAGUE finalist selection, plus NHK and Nikkei coverage and a TechGALA appearance. The company is hiring across engineering, global business development, IP sales and community management.

Latest developments

In March 2025 the company was interviewed by Nikkei. In February 2025 it was selected as a finalist of the AICHI NEXT UNICORN LEAGUE, spoke at TechGALA and was featured by NHK. Vertical-scroll optimization and translation into 32 languages for global distribution are described as planned for implementation from 2026.

▸Full profile — market position, technology, go-to-market, geography, history, risks & controversies

Market position

The company describes its platform as one of the industry's largest licensed manga distribution services, handling over 360,000 paid titles with formal approval from several hundred publishers, and characterizes that level of publisher approval as unusual for a startup. It frames the licensed content library and its creator network as core assets differentiating it in AI-assisted manga and anime production.

Samaria positions itself on three points: independently developed AI rather than a wrapper over external models, integrated with legitimately licensed Japanese manga and anime content; an end-to-end one-stop workflow from planning through finished manga and anime, built on in-house infrastructure; and a story-generation foundation intended to preserve character consistency and avoid narrative contradictions across long-form anime, which the company presents as difficult with conventional anime generation. It also emphasises the scale of its publisher licensing relative to its stage.

Technology

The core is a story-generation system built on large language models and tuned to Japanese production conventions, maintaining plot consistency and character individuality, and outputting synopses, episode splits and scripts. On top of it sits an image-generation pipeline that semi-automates layout (name), drawing, coloring and speech-balloon placement, and an animation stack that animates characters and produces AI voice acting, BGM and sound effects for both short social-media clips and long-form anime. Supporting infrastructure includes in-house server construction, a search engine handling several hundred thousand volumes of data, a distribution platform for large traffic volumes, and a multilingual translation engine; vertical-scroll optimization and 32-language translation are described as scheduled for 2026 or later. The company states its AI is independently developed rather than a wrapper around external models.

Go-to-market

Direct sign-up for the JAPANMEDIA AI service through the company's site, with a document-request (shiryō seikyū) channel for the JAPANMEDIA materials and an inquiry line. The company also pursues visibility through startup programs, awards and media, including a HONGOAI 2024 BEST AWARD, selection as a finalist in the AICHI NEXT UNICORN LEAGUE, a TechGALA speaking appearance, and coverage by NHK and Nikkei. It is recruiting IP sales and community manager roles as well as full-stack engineers and global business development staff.

Manga artists, aspiring creators and anyone wishing to produce manga or anime, including individual creators who would otherwise handle story, artwork and finishing alone; readers of licensed Japanese manga on the distribution platform; and, for the global expansion plans, overseas audiences reached through translated vertical-scroll manga and anime.

Geography

Headquarters in Nishi-Shinjuku, Shinjuku-ku, Tokyo (Nishi-Shinjuku Mizuma Building 6F, 160-0023), with a branch office at 214 Homer Ave, Palo Alto, California. Planned global distribution via multilingual translation, with 32-language support targeted from 2026.

History

The company is led by co-founder and CEO Yuko Yamasaki, who studied in China at Tsinghua University, worked at Television Man Union while aiming to direct films and studying screenwriting under director Hirokazu Kore-eda, moved to the Hakuhodo group where she handled clients including Huawei, and then worked at Voltage on advertising planning for titles such as 'Itsuwari no Kimi to Scandal', 'Nemurenu Machi no Cinderella' and 'Doubt'. Publicly noted milestones include a BEST AWARD at HONGOAI 2024 in April 2024, and in early 2025 an NHK feature, a TechGALA speaking appearance, selection as a finalist of the AICHI NEXT UNICORN LEAGUE, and an interview with Nikkei.

Risks & controversies

The JAPANMEDIA AI terms state that purchased points cannot be returned, exchanged or cancelled after purchase, and that no refunds are made on withdrawal or subscription cancellation. Key global-distribution features — vertical-scroll optimization and 32-language translation — are not yet implemented and are targeted for 2026 or later. The company's own framing notes that Japanese manga and anime production remains labor-intensive and that language and business-practice barriers constrain global expansion.

Compiled by commissioned research from 8 cited public sources — announcements, filings, and press listed under research sources below.

Key figures

latest reported
Employees (including contractors and part-time)Jan 202528 people
HeadcountAug 20263
Licensed paid titles on platformJan 2025360,000 titles
Planned translation languagesJan 202632 languages
Publishers granting approval/licensesJan 2025several hundred publishers
Stated capitalJan 2025$35.5M

Company-reported or press-reported figures, each dated to when it was claimed — not independently audited.

Related companies · 1

Companies working in the same space as Samaria.

Timeline · 5

launches, deals, and filings
Mar 2025
Interviewed by Nikkei

source ↗

Feb 2025
Selected as a finalist of the AICHI NEXT UNICORN LEAGUE

source ↗

Feb 2025
Featured by NHK

source ↗

Feb 2025
Spoke at TechGALA

source ↗

Apr 2024
Received BEST AWARD at HONGO AI 2024

source ↗

Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.

▸Research sources · 8

primary sources listed

8 public sources were cited for this profile; the first-party ones are listed here.

Frequently asked questions

What does Samaria do?
Japanese company building JAPANMEDIAI, an AI toolset for generating manga, anime and stories, plus a licensed manga distribution platform.
Who founded Samaria?
Samaria was founded by Yuko Yamasaki.
Who are Samaria's investors?
Samaria's investors include Shizuoka Capital, Techstars, X-HUB TOKYO Global Startup Accelerator, Plug and Play Ventures.
Where is Samaria headquartered?
Samaria is headquartered in Toshima City, JP.