yellow door

What yellow door does

yellow door inc. is a Japan-based, privately held professional services firm founded circa 2022 that supports early-stage entrepreneurs, startups, and corporate new-venture teams. The company is structured as a small consultancy whose primary buyer is individual founders seeking to articulate and operationalize a vision, with secondary buyers including angel investors, corporations seeking deal flow, and corporate innovation units pursuing co-creation projects. Services are delivered on a project-based, quote-based engagement model with no publicly disclosed pricing.

The firm's offering is organized around three service lines: 'Funding Support' (new business accompaniment and fundraising preparation), 'Produce' (PR, branding, and communications), and 'Community Services' (event planning, casting, and networking). The flagship methodology is 'Founder's Design,' a proprietary service framework under Produce that extracts an entrepreneur's underlying narrative and worldview and converts it into pitch materials, video branding, PR strategy, and social/content plans. yellow door also operates 'Startup Ale' as a sub-brand community platform linking startups, investors, and corporations around the intersection of existing industries and cutting-edge technology.

The business model is fee-for-service professional consulting with community/event monetization on the side. GTM is community-led: marketing runs primarily through content on note.com and YouTube, plus events under Startup Ale, with direct consultation as the conversion channel. The firm is bootstrapped or founder-led with no disclosed external funding, no headcount disclosures, and no revenue figures. It maintains a curated ecosystem of partner links including Power Angels, the Japan Angel Investor Association, the Yokohama CEO's Club, unicornfarm, and AI GAIS. Geographically, operations are domestic Japan.

Name

yellow door

Legal name

yellow door inc.

Website

https://yellowdoor.co.jp

Company type

Private

Founded year

2022

Operating status

Operating

Short description

yellow door inc. is a Japan-based startup consultancy offering funding support, PR/branding, and community services to early-stage founders, investors, and corporate innovation teams, anchored by its 'Founder's Design' narrative methodology and the Startup Ale community platform.

Ownership category

akta.pro rank

Headquarters

HQ city

Japan

HQ country

Japan

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Marketing or Sales, Operations

Revenue model

1. Funding Support & Business Accompaniment: New business accompaniment services and funding support for startups and entrepreneurs. Revenue generated through consulting and advisory fees for helping startups prepare for fundraising.
2. PR & Branding Services: Public relations, branding, and communications support under the 'Produce' service line. Project-based fees for media strategy, content creation, and brand development services.
3. Event Planning & Community Management: Community event planning, networking facilitation, and co-creation project support services. Revenue from event organization and community platform management.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

yellow door provides business accompaniment, fundraising support, and PR/branding services for Japanese startups and entrepreneurs. Its core services cover Funding Support (new business coaching and capital-raising preparation), Produce (PR and brand narrative development via the proprietary 'Founder's Design' methodology), and Community Services (event planning, casting, and networking connecting startups with angel investors and corporations).

Product overview

yellow door is a startup consulting and support company offering a portfolio of services including Funding Support (new business coaching and fundraising), Produce (PR and branding), and Community Services (planning, casting, and networking). The flagship service is Founder's Design, which helps entrepreneurs articulate their vision through story design, pitch construction, video branding, PR strategy, and content planning. The company also operates Startup Ale as a community platform bridging traditional industries with advanced technology.

Differentiator

Problem solved

Functional benefit

Brands

• Startup Ale: A community platform for startups and entrepreneurs.
• Founder's Design

Products and services

• Funding Support New business accompaniment and fundraising preparation service for startups and entrepreneurs in Japan, covering business concept structuring, funding strategy, and support through the capital-raising process.
• Produce (Founder's Design) PR and branding service built on the proprietary 'Founder's Design' methodology that linguistically extracts and edits the founder's inner thoughts and worldview into communicable formats, including story design, pitch construction, video branding, PR/media strategy, and LP/SNS content planning.
• Community Services Planning, casting, and networking services that connect startups with angel investors, corporations, and ecosystem partners, including event programming and co-creation project support.
• Startup Ale Community platform and event series connecting existing industries with cutting-edge technology, supporting startups in implementing their visions through networking, casting, and event programming.

Quantifiable outcome

• 200,000+ community members reached through platforms and events

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

Four partnerships are on record, tiered core and minor.

• Startup AlecoreStrategic or Co-development PartnerA core community platform operated by yellow door for startups, investors, and corporations to connect around existing industry × cutting-edge technology themes. Described as '企画' (planning/planning support), 'キャスティング' (casting), and 'ネットワーキング' (networking).
• Yokohama CEO's ClubminorStrategic or Co-development PartnerRegional business community organization in Yokohama. Yellow door links to this community as part of its ecosystem networking strategy for connecting entrepreneurs with peer business leaders.
• unicornfarmminorStrategic or Co-development PartnerStartup ecosystem platform linked on yellow door website. Part of the broader startup community network that yellow door participates in to provide ecosystem access to its clients.
• AI GAISminorStrategic or Co-development PartnerAI-focused community or organization linked on yellow door website. Represents technology-focused ecosystem connection for startups working with AI and emerging technologies.

Scale indicators1 record

Recent moves5 records

Expansion highlights5 records

Direct peers

• Plug and Play Japan: Japan-based innovation platform and accelerator connecting startups, corporations, and investors. Highly comparable to Yellow door's Startup Ale community and corporate-innovation positioning in the Japanese market.
• Samurai Incubate: Japanese startup incubator and seed investor that supports early-stage founders with capital, hands-on operational guidance, and ecosystem access — directly comparable to Yellow door's funding support and accompaniment services.
• 01Booster: Japanese startup accelerator that runs bootcamps and cohort programs for early-stage founders. Comparable as a domestic startup-support services firm operating events, mentorship, and founder-narrative development.

Emerging players

• ReGACY Innovation Group: Tokyo-based innovation consultancy supporting corporates and startups on new business creation and ecosystem engagement. Comparable for its consulting-style support of new-venture and co-creation projects.
• Infinity Ventures Summit (IVS): Major Japanese startup community and event platform connecting founders, VCs, and corporates. Comparable to Yellow door's Startup Ale community-building and networking motion.
• Leave a Nest: Japanese deep-tech and science-based startup support platform running accelerators and ecosystem programs. Comparable as a Japan-based community-led startup support organization with similar founder-narrative and event orientation.
• Creww: Japanese startup-corporate matching and acceleration platform. Comparable for its community-led approach connecting early-stage founders with corporate partners and ecosystem resources.

Broad incumbents

• Vector Inc. Established Japanese PR and communications firm with significant startup and tech-client work. Comparable for the Produce/PR-branding portion of Yellow door's offering, though at much larger scale.
• Sunny Side Up Group: Japan-focused PR and communications agency that supports startups and growth companies with media strategy and branding. Comparable to Yellow door's Produce service line at an incumbent scale.
• Deloitte Tohmatsu Venture Support: Big Four advisory practice in Japan supporting startups and corporates on fundraising, growth, and new-venture strategy. Comparable to Yellow door's funding support and business accompaniment, but at institutional scale.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks5 records

Key highlights5 records

Customer concentration

• YouTubeyoutube.com/@yellowdoorInc

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 yellow door