Kaiyuu

What Kaiyuu does

Kaiyuu, legally 株式会社カイユウ (KAI-YOU Inc.), is a privately held Japanese pop culture media and creative agency headquartered in Shibuya, Tokyo. Founded in 2011 and operating since 2013, the company organizes its work around three internal labels — KAI-YOU Marketing, KAI-YOU Medium Tech, and MILL — that span marketing services, media operations, and creative production respectively. It serves two principal customer groups: pop culture enthusiasts (anime, manga, VTuber, hip-hop, games, street culture) reached through consumer media, and enterprise brands seeking authentic integration with those audiences, including Disney, Wizards of the Coast Japan, Intel Japan, CAPCOM, Netflix, KINTO Technologies, and KAMITSUBAKI STUDIO.

The company operates an integrated product stack centered on KAI-YOU.net (launched March 2013), a major Japanese pop culture editorial site; KAI-YOU Premium (launched March 2019), a subscription service that reached 20,000 registered users by November 2024; KAI-YOU Videos (YouTube channel launched November 2016) for street culture content; and GOTCHA! (TCG/hobby YouTube channel launched February 2026). Supporting products include the POPisHere fashion merchandise line, Hakkou-kun LINE stamps, and the recurring KAI-YOU HYPER POP MARKET event. No proprietary technology platform, API, or core technology stack is disclosed in available source material.

KAI-YOU generates revenue through four streams: advertising and sponsorship on KAI-YOU.net and YouTube channels, subscription fees for KAI-YOU Premium, B2B professional services for enterprise marketing campaigns (planning, creative direction, video and design production), and merchandise sales via Suzuri and LINE STORE. The go-to-market motion is content-led: the company builds audience and credibility through owned media, then converts that reach into paid B2B engagements and brand activations. The firm is bootstrapped with no disclosed equity funding rounds, no parent company, and no subsidiaries, and operates with 11–50 employees averaging 29 years old.

Name

Kaiyuu

Legal name

株式会社カイユウ

Website

https://kai-you.co.jp

Company type

Private

Founded year

2013

Operating status

Operating

Headcount range

11–50 employees

Short description

Kaiyuu is a privately held Japanese pop culture media and creative agency that runs KAI-YOU.net, KAI-YOU Premium, and YouTube channels serving anime, manga, VTuber, and street culture enthusiasts, while delivering B2B marketing and creative services to enterprise brands in Japan.

Ownership category

akta.pro rank

Product category

Pop Culture Media & Marketing Services

NAICS

Media Streaming Distribution Services, Social Networks, and Other Media Networks and Content Providers (516210), Arts, Entertainment, and Recreation (71), Broadcasting and Content Providers (516)

SIC

Services-Engineering, Accounting, Research, Management (8700), Services-Miscellaneous Amusement & Recreation (7990)

akta.pro primary industry

B2B/ABM Creative Agencies (MPAAAAAI)

akta.pro secondary industries

Technology & B2B PR (MPAAADAC), Consumer & Public Shows (B2C) Organizers (THAHABAC)

Keywords

• Pop culture media
• Marketing services
• Creative production
• Subscription content
• Brand campaigns

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Marketing or Sales, Operations, Technology or R&D, Supply Chain

Revenue model

1. Advertising/Sponsorship: Revenue generated through advertising on KAI-YOU.net and YouTube channels, as well as sponsored content and promotional partnerships with brands.
2. Subscription (KAI-YOU Premium): Subscription-based premium content service offering specialized and cross-disciplinary pop culture content for next-generation creators. The service reached 20,000 registered users as of November 2024.
3. Marketing/Creative Services: B2B services providing marketing campaigns, creative direction, design, and production for enterprise clients across entertainment, gaming, and cultural sectors.
4. Merchandise Sales: Sale of branded merchandise including LINE stamps (Hakkou-kun mascot character), apparel, and goods through e-commerce platforms and services like Suzuri.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels7 records

Core offering

KAI-YOU is a Tokyo-based pop culture media and consulting agency that operates a multi-platform content ecosystem (KAI-YOU.net, KAI-YOU Premium subscription, KAI-YOU Videos, GOTCHA! YouTube channel) while providing B2B marketing, creative direction, and content production services to entertainment, gaming, and consumer brands. The company generates revenue through advertising on its owned media, subscription fees for premium content, branded merchandise sales, and fee-based marketing/creative services for enterprise clients.

Product overview

KAI-YOU operates a multi-platform pop culture media ecosystem organized around three business labels: Marketing, Media, and Creative. The core offering consists of KAI-YOU (the main pop culture media platform launched in 2013), KAI-YOU Premium (subscription-based professional content launched in 2019), and KAI-YOU Videos (YouTube channel for street culture content launched in 2016). Additional products include GOTCHA! (TCG and hobby YouTube channel), the POPisHere fashion brand, and specialized internal labels KAI-YOU Marketing and KAI-YOU Medium Tech under the Marketing and Media pillars respectively, plus MILL creative studio under the Creative pillar. The KAI-YOU HYPER POP MARKET represents a major event initiative. Together, these products form an integrated pop culture media, marketing, and creative services portfolio.

Differentiator

Problem solved

Functional benefit

Brands

• KAI-YOU Marketing: Marketing label serving as a bridge between marketing and pop culture.
• KAI-YOU Medium Tech
• MILL
• GOTCHA!

Products and services

• KAI-YOU (Media Platform) Japanese pop culture media website covering anime, manga, hip-hop, film, literature, VTuber, music, and street culture with daily content publication for general enthusiast readers.
• KAI-YOU Premium Subscription-based premium pop culture content service providing specialized and cross-disciplinary editorial content for next-generation creators and serious enthusiasts; reached 20,000+ registered users as of November 2024.
• KAI-YOU Videos YouTube channel focused on street culture content including hip-hop, dance, and tattoo, featuring live footage and interviews.
• GOTCHA! Trading card game (TCG) and hobby-focused YouTube channel operated by KAI-YOU, featuring card game content and original merchandise.
• POPisHere Fashion brand launched by KAI-YOU offering pop culture-themed apparel and merchandise through e-commerce platforms such as Suzuri.
• KAI-YOU Marketing (B2B Marketing Services) B2B marketing services business label providing pop culture marketing campaigns, creative direction, content production, and event activations for enterprise clients across entertainment, gaming, and consumer brands.
• MILL (Creative Studio) Creative studio label providing design, web development, illustration, and content creation services to enterprise clients.
• KAI-YOU HYPER POP MARKET Pop culture event series featuring cross-genre creators, flea market, and networking activations.

Quantifiable outcome

• 20,000+ registered users for KAI-YOU Premium subscription service
• +1 more outcomes

Named customers7 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Two partnerships are on record, tiered notable.

• FUBI Co., Ltd.notableStrategic or Co-development Partner · 30 June 2026FUBI handles planning and production of the podcast 'Henkutsu Chaahan' (偏屈炒飯) featuring KAI-YOU CEO Yonemura Tomomi and Mirrative CEO Akanawa Junichi. FUBI is an audio content production company with 180+ shows experience, expanding to video in 2024.
• KAMITSUBAKI STUDIOnotableGTM or Marketing Partner · 4 February 2026KAI-YOU became a sponsorship partner for KAMITSUBAKI WARS 2026 神椿横浜決戦 IN ぴあアリーナMM. The event features virtual artist group V.W.P and virtual singer Kafu (花譜). KAI-YOU plans reader gift campaigns and live reports.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• UUUM Inc. Japanese YouTube MCN and creator agency that monetises video audiences and provides B2B marketing services to brands. Closely comparable to KAI-YOU's YouTube-first content and KAI-YOU Marketing services combination.
• note (note.com): Subscription/membership content platform popular with Japanese creators and niche enthusiasts. Comparable to KAI-YOU Premium as a paid subscription media layer built on top of free content and creator communities.
• pixiv Inc. Japanese creator platform for illustrators and creators with subscription and commerce features (pixivFANBOX, BOOTH). Comparable to KAI-YOU in serving the next-generation creator economy with content, community, and monetisation tools.
• natalie (natalie.mu): Japanese entertainment/pop culture news vertical run by KADOKAWA, covering movies, music, anime, and comedy. Directly comparable to KAI-YOU.net as a niche entertainment media destination serving similar enthusiast audiences with daily editorial coverage.

Broad incumbents

• CyberAgent, Inc. Japanese digital media and advertising conglomerate operating AbemaTV, Ameba, and major internet advertising businesses. Overlaps with KAI-YOU on digital content distribution and B2B advertising/marketing services, but at much larger scale.
• Dwango (niconico): Operator of niconico, Japan's major video and live-streaming community, and part of the KADOKAWA group. Overlaps with KAI-YOU's video content and live event coverage of Japanese pop culture at much larger scale.
• KADOKAWA Corporation: Japanese entertainment and publishing conglomerate operating anime (via Kadokawa Anime), games (FromSoftware), web media (niconico, natalie), and bookstores. A broad incumbent in the same pop culture / anime / manga media category where KAI-YOU competes.

Emerging players

• ANYCOLOR Inc. Operator of Nijisanji, one of Japan's largest VTuber agencies. Highly comparable pop culture adjacency (VTubers/virtual artists are core to KAI-YOU's coverage and event sponsorship such as KAMITSUBAKI WARS 2026).
• Cover Corporation: Operator of Hololive Production, a major VTuber agency. Comparable to KAI-YOU on the VTuber and virtual artist dimension of Japanese pop culture media and events.

Others

• BookLive (BookLive Co., Ltd.): Japanese digital manga/e-book distributor and content platform owned by Toppan. A digital pop culture content distributor comparable to KAI-YOU's online content and commerce angle, though focused on manga rather than editorial coverage.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/KAI_YOU_ed
• GitHubgithub.com/kaiyoued/businessReport
• YouTubeyoutube.com/c/kaiyou_net
• Facebookfacebook.com/kaiyoufb
• Instagraminstagram.com/kai_you_ed

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Kaiyuu