Business Overview / About

Operator Information

Basic Information

Name

Shingo Kimura

Trade Name

NIJURASEN

Business Type

Sole Proprietor

Location

Quadrifoglio 8F, 5-14 Kinkocho Kanagawa-ku, Yokohama-shi, Kanagawa-ken 221-0056 Japan

Phone

+81-80-5611-7595

info[at]kimura512.dev

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Inquiries

For work requests or consultations, please feel free to contact us via the inquiry form.

Message

Shingo Kimura (NIJURASEN)

With the rapid evolution of AI, business models that were once difficult to realize without a large enterprise or team are now within reach of individuals. Leveraging my experience in bioinformatics research and AI service development, I am committed to accelerating your business.

I believe the process of this challenge will be valuable information. I operate this site as a business base and information sharing platform.

Philosophy

The physicist Einstein called compound interest the greatest invention of mankind and the most powerful force in the universe—or in other words, exponential growth.

On the other hand, I believe life has continued for 3.7 billion years without extinction because life itself has the nature to reproduce exponentially.

From this, I came to believe that the key to prosperity in business also lies in exponential growth. We devote ourselves to building mechanisms that accelerate our clients' businesses exponentially, actively commit to their success, and walk alongside them as partners.

Services

Original Service Development

From planning to development and operation of various digital products, including web services, smartphone apps, and AI tools. Realizing ideas quickly with indie agility.

Software Contract Development

Utilizing the knowledge from original service development to solve client business issues. Providing flexible support like technical consulting and prototype development.

Information Dissemination

Sharing the behind-the-scenes of developed services and real daily life as an indie developer on this site and social media.

Pricing (Estimate)

We offer two engagement models tailored to your needs: delivery-based and ongoing partnership.

Project Scale	Contract Type	Estimated Cost	Timeline	Best For
Small-scale Projects (Internal tools, MVPs, etc.)	Fixed Initial Fee (Contract development)	From ¥500,000	1–2.5 months	When you want to test market response quickly or automate a specific workflow immediately.
Small-scale Projects (Internal tools, MVPs, etc.)	Monthly Retainer (Technical advisor / partnership)	From ¥100,000/mo	Ongoing (3+ months)	When you want technical sparring and incremental feature improvements month by month.
Medium to Large Projects (SaaS, full-scale apps, etc.)	Fixed Initial Fee (Contract development)	From ¥2,000,000	3–6+ months	Core system development with complex logic, payments, and business-critical features.
Medium to Large Projects (SaaS, full-scale apps, etc.)	Monthly Retainer (Technical advisor / partnership)	From ¥300,000/mo	Ongoing (6+ months)	When you need a dedicated CTO/lead engineer to continuously accelerate development.

*Costs and timelines vary depending on project requirements. Feel free to reach out for a consultation.