About Ⅱ BASE - SEO & Digital Marketing Agency in Japan

ⅡBASE Inc. is Japan’s only all-local, bilingual SEO & Digital Marketing agency in Tokyo, dedicated to propelling international businesses into the Japanese market. While our local experts excel in digital marketing, SEO, PPC, PR, and strategic planning, we also maintain a strict “limited-client” model—ensuring each partner receives our full attention, unmatched cultural insight, and rapid, high-impact results. Through this exclusive approach and our bilingual expertise, we offer a one-stop solution for fast and sustainable growth in Japan.

PROFILE

Year of establishment	April 2019
CEO	Ryota Kaku
Address	6th Floor, Nishishinjuku Mizuma Building, 3-3-13 Nishishinjuku, Shinjuku-ku, Tokyo, Japan
Capital	JPY 5 million
Japanese local staff	8
Business	– Digital Marketing Services (SEO, PPC, PR) – Japan Market Entry Support – Business Consulting – Developping IT Services – Runnning Web Media – Study Abroad Agency – Online English Coaching
Digital Marketing Services	SEO ・On-page SEO Services & Japanese Localization ・Off-page SEO Services & Link Building ・SEO Content Marketing Services ・SEO Consulting Services ・Local SEO Service PPC ・Paid Search Advertising ・Social Media Advertising Services ・Google Analytics Support PR ・Social Media Marketing Services ・Influencer Marketing Services ・Press Release Distribution Service
Telecommunications Service Provider Registration	Ministry of Internal Affairs and Communications Registration Number: A-04-19754
Invoice Registration Number	Qualified Invoice Issuer Registration Number: T9011001127384

ACHIEVEMENTS

Industry	Achivements
Web3 / Blockchain	Led a full-stack growth revamp for a blockchain service suffered from near-zero active usage despite a healthy pool of free sign-ups. Delivered (1) user-centric product redesign, (2) strategic partnerships with a leading Web3 communitiy, and (3) on-site activations at major Web3 events. Within a few months, this combination converted free users into paying adopters and generated service volume worth around $2.5 million with double-digit ROI multiples.
Real Estate	Reframed a “raise social engagement” request into an integrated, long- and short-term growth engine: SEO, PR via press releases & brand mentions, influencer marketing, and parallel PPC. In ~6 months, achieved a 10× lift in organic sessions and traffic value and filled paid/owned funnels to hit seminar acquisition and deal targets. The PR × SEO mix and SEO × PPC pairing are recognized best-practice combinations for authority building and scalable ROI.
Tourism	Delivered an average ROAS of 500% within six months by managing effective PPC campaigns on Google Ads, Meta Ads, Yahoo Ads.
Recruitment	Achieved a tenfold increase in organic monthly traffic and site traffic value in one year by creating SEO-based B2B content, optimizing page speed and user experience, and acquiring backlinks from authoritative Japanese websites through targeted outreach.
EdTech	Boosted organic traffic by 200,000 monthly visits (200% increase) and site traffic value by over $30,000 in one year through strategic SEO and content updates.
IT (In-house Business)	Thanks to our PR strategy and outreach, our website buying and selling service was featured in 10 media outlets as a recommended M&A platform, earning over 50 mentions. With a 94% closing rate, we finalized over 30 transactions in about one month. A year after launch, we sold the service following a compelling offer.
Media (In-house Business)	By optimizing site speed, link-building, and content, we doubled monthly traffic to nearly one million page views and 700,000 unique users. Meanwhile, our new YouTube channel—highlighting foreign tourists enjoying Japanese cuisine with influencer marketing—quickly surpassed 500,000 views and 3,000 subscribers in just few months. Combined with a strong presence on Instagram, X, and TikTok, our total social following reached 50,000. We also partnered with dozens of establishments, including “teamLab Planets Tokyo DMM“, further strengthening our track record.

MESSAGE

Let us be your unstoppable growth engine in Japan.

In today’s fast-moving world, it can be challenging to break into a competitive market like Japan. At II BASE, our bilingual team does more than just translate your ideas—we adapt them to fit Japan’s unique culture and consumer habits, helping you make a real impact, fast.

What sets us apart is our focus on just a few, high-value clients. We don’t stretch ourselves thin with too many projects. Instead, we give each client our full attention. This approach has led to an impressive 80% client retention rate from 2022 to 2024—reaching 100% in 2024 alone. It’s proof of how deeply we commit to each partnership.

By combining proven marketing strategies with deep local knowledge, we deliver powerful results quickly. We also believe in building long-term relationships with partners who share our vision for positive change in the Japanese market. Let’s team up to break barriers, expand your reach, and enjoy sustainable success in Japan.

I look forward to welcoming you to our select family of clients.

Ryota Kaku
CEO, II BASE Inc.

Career

2014

Studied abroad in the Philippines during his final year of high school, igniting his entrepreneurial spirit.
Founded a study-abroad agency while still at university, applying self-taught web marketing tactics to build an owned media channel from scratch—reaching 40,000 monthly page views and consistently generating about 100 study-abroad consultation requests per month.
Operated this business for approximately four years and eventually sold it due to an offer from the major company in the industry.
After graduation, spent around six months contributing to a new business project at a Japan-based IT startup overseas.

2019

Founded II BASE Inc., an IT service and web media company.
Operated a website M&A platform, reviewing around 200 websites, and sold the business within one year—marking his second successful business exit due to offers from other companies.
Subsequently managed web media that peaked at over one million monthly page views and focused on social media management, reaching approximately 50,000 followers within a year.
Launched more than ten websites across various ventures.
Successfully sold a web media business that achieved over one million monthly page views, marking his third business exit.

2022

Began full-scale marketing support, leveraging past experience in SEO, consulting, and web marketing for Japanese clients.
Collaborated with large-scale online English education providers (with over 1,000 employees globally) and multiple startups that raised multimillion-dollar funding—consistently driving remarkable client results.

2024

Contracted by a U.S.-based client, achieving 500% ROAS and $30K/month revenue in 6 months through PPC advertising and SEO.
Realized that by supporting international products and services, he could drive meaningful changes in the Japanese market.

2025

Officially launched a dedicated digital marketing support service for overseas companies entering the Japanese market, aiming to maximize their growth and success through proven marketing strategies.