What 株式会社プラスアルファ does

株式会社プラスアルファ (Plus Alpha, doing business as HPA) is a Tokyo-based private company that exclusively serves the Japanese pachinko and pachislot industry with a portfolio of customer acquisition and in-store marketing services. Operating from a single headquarters in Toshima-ku, Tokyo, the firm targets pachinko hall operators across Japan and explicitly positions itself as a specialist in a regulated, declining vertical, citing navigation of industry advertising regulations (風適法) and prefecture-level guidelines as a primary differentiator. The company has been operating in this niche since at least 2009 based on management tenure references.

The company's core offering is full-service WEB and SNS advertising management across Google Ads, Yahoo! Ads, LINE Ads, YouTube Ads, P-MAX (Performance Max), DV360, Instagram, X (Twitter), and Facebook. It is a certified Google Partner (agency ID 2791043260) with personnel holding Google Analytics Individual Qualification (GAIQ) and AdWords certifications, and over 700 hours of documented Google platform learning. Layered around the advertising core are eight additional service lines: a recurring design subscription (アド・レディ), custom landing page production from approximately ¥70,000, video and audio creative production, Google Business Profile / MEO optimization, pachinko-specific recruitment (人材紹介), web and sales floor promotion training, sales floor diagnostic surveys (売り場カルテ調査), and a sales floor promotion certification program with associated published books.

The business model is primarily professional services and usage-based: revenue is generated from advertising spend management and agency fees on campaigns starting from ¥10,000/month (P-MAX from ¥1,000/day), plus project fees for landing pages, video, audits, and training, supplemented by recurring design subscription fees. Go-to-market is sales-led via direct consultation, free account diagnosis, and full-service outsourcing, reinforced by content marketing through an active blog (multiple posts per month through July 2026), a YouTube channel, and serialized columns in leading pachinko trade magazines (月刊グリーンベルト, 月刊アミューズメントジャパン). The company is privately held with no disclosed funding, parent company, subsidiaries, or institutional investors.

Name

株式会社プラスアルファ

Legal name

株式会社プラスアルファ

Website

https://hpa.co.jp

Company type

Private

Operating status

Operating

Headcount range

1–10 employees

Short description

株式会社プラスアルファ (Plus Alpha / HPA) is a Tokyo-based, Google-certified digital marketing agency exclusively serving Japanese pachinko and pachislot hall operators, offering web and SNS advertising, design subscription, landing page, video, MEO, recruitment, training, and sales floor audit services.

Ownership category

akta.pro rank

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. WEB Advertising Agency Services: Full-service web advertising agency for pachinko stores, including campaign setup, management, optimization, and creative production across Google Ads, Yahoo! Ads, LINE Ads, YouTube, and social media platforms. Revenue is generated through advertising spend management and agency fees.
2. Design Subscription (アド・レディ): Monthly design subscription service providing regular design materials for pachinko stores including promotional materials, posters, and in-store signage.
3. Video and Audio Production: Video and audio content creation services for pachinko store marketing, including promotional videos and advertising creatives.
4. Landing Page Production: Custom landing page creation for pachinko stores, typically priced from approximately 70,000 yen per project.
5. Pachinko Industry Recruitment: Staffing and recruitment services specifically for the pachinko industry, connecting job seekers with pachinko businesses.
6. Training Services: WEB advertising and SNS advertising training, as well as sales floor promotion training programs for pachinko industry professionals.
7. Sales Floor Audit (売り場カルテ調査): Merchandise audit and sales floor diagnosis services for pachinko stores.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

株式会社プラスアルファ is a Google Partner certified agency that exclusively serves the Japanese pachinko and pachislot industry with full-service WEB and SNS advertising management across Google Ads, Yahoo! Ads, LINE Ads, YouTube, Instagram, X (Twitter), and Facebook platforms. Beyond advertising operations, the company provides a design subscription (アド・レディ), custom landing page production, video and audio creative production, pachinko-industry personnel placement, sales floor audits, and certified training programs. All services are tailored to navigate pachinko-specific advertising regulations (風適法) and resonate with pachinko fan behavior.

Product overview

株式会社プラスアルファ operates as a pachinko-industry-specialized service agency offering a portfolio of interconnected marketing services. The core offering is WEB advertising and SNS advertising management (spanning Google Ads, Yahoo! Ads, LINE Ads, YouTube Ads, Instagram/X/Facebook ads, and P-MAX), supported by ancillary services including design subscription (アド・レディ), video/audio production, and landing page production. The company also offers personnel placement (人材紹介), store diagnostic surveys (売り場カルテ調査), promotion training programs, and a professional certification program (売り場プロモーション診断士). Google Business Profile optimization (MEO) rounds out the service lineup. Together these services are designed to help pachinko stores attract customers through both digital advertising and in-store promotional alignment.

Differentiator

Problem solved

Functional benefit

Products and services

• Pachinko Job Change Navigator (人材紹介) A job-change navigation service for the pachinko industry, helping pachinko companies find suitable talent and connecting job seekers with positions in the sector. Operated by the company since 2009 with deep understanding of industry-specific hiring needs.
• Ad-Ready Design Subscription (アド・レディ) A subscription-based design service that regularly delivers promotional materials, banners, posters, and in-store signage for pachinko store marketing on a recurring monthly basis.
• WEB and SNS Advertising (WEB広告・SNS広告) Comprehensive management of search ads, display ads, video ads, and social media advertising for pachinko stores across Google Ads, Yahoo! Ads, LINE Ads, YouTube, Instagram, X (Twitter), and Facebook platforms. Includes campaign setup, optimization, creative production, and performance analysis.
• Various Promotion Training Programs (WEB広告・SNS広告研修・売り場プロモーション研修) Training programs that teach pachinko store staff how to effectively use web advertising, SNS tools, and sales floor promotion techniques, including formal sales floor promotion certification.
• Merchandise Audit (売り場カルテ調査) A diagnostic survey service analyzing sales floor conditions, customer flow, and promotional effectiveness to provide actionable improvement recommendations for pachinko store operators.
• Sales Floor Promotion Certification and Books (売り場プロモーション診断士検定・書籍) Professional certification testing and published books focused on sales floor promotion expertise for the pachinko and amusement industry, including accredited 売り場プロモーション診断士 (sales floor promotion specialist) credentials.
• Video and Audio Production (動画・音声制作) Production of promotional videos and audio content for pachinko store advertising campaigns, including YouTube ads and in-store video materials.
• Landing Page Production (LPサイト制作) Custom landing page production services for pachinko stores, enabling SEO-optimized web presence and customer data collection through dedicated websites, priced from approximately 70,000 yen per project.
• Google Business Profile Optimization / MEO (Googleビジネスプロフィールの最適化) Optimization service for Google Business Profile (Google Maps listings) to improve local search visibility and attract nearby customers through accurate business information, photo updates, and review management.

Quantifiable outcome

• Case example: Store using P-MAX saw 3x increase in store visits with cost per visit reduced from ~1,500 yen to ~700 yen
• +4 more outcomes

Named customers1 record

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• Google (Google LLC)coreTechnology or IntegrationThe company is a Google certified partner (Google認定パートナー企業), utilizing Google's advertising platforms including Google Ads, YouTube Ads, P-MAX, and Google Business Profile optimization tools to serve pachinko industry clients. This partnership provides access to Google's advertising technology and platforms for campaign management.

Scale indicators2 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Allied Architects (AA Inc.): AA Inc. is a Japanese digital marketing agency providing digital advertising, creative production, and consulting services across multiple verticals. Similar full-service digital agency structure with comparable SMB-to-mid-market client base and platform-partner credentials.
• Septeni Japan: Septeni is one of Japan's largest independent digital advertising agencies, offering full-service digital marketing including programmatic, social, search, and creative production. Closely comparable business model and delivery mechanism, though operating across multiple verticals rather than pachinko-focused.
• Sprocket: Sprocket is a Japanese digital marketing technology company providing marketing optimization and personalization platforms. Comparable in serving SMB-to-mid-market clients with data-driven digital marketing services, though technology-platform rather than full-service agency.
• Miroku Jyoho Service (MKS): MKS is a leading Japanese IT services provider specialized in the pachinko industry, offering hall management systems, marketing support, and operational tools to pachinko halls. It serves the same vertical customer base with technology and marketing services, making it the most directly comparable peer.

Emerging players

• Ferret One: Ferret One provides marketing automation and content tools specifically targeted at Japanese SMBs. An emerging player in the SMB marketing services space with partial overlap in serving small businesses seeking digital marketing infrastructure.
• XICA: XICA is a Japanese AI-driven marketing analytics and customer data platform company. An emerging technology player providing AI-based marketing optimization services to Japanese SMBs, partially overlapping in the digital marketing services space.

Broad incumbents

• ADK Holdings: ADK Holdings is a Japanese advertising holding company providing integrated advertising, digital, and content services across multiple verticals. A broad incumbent with overlapping digital capabilities but lacking pachinko-specific specialization.
• Hakuhodo: Hakuhodo is one of Japan's largest advertising agencies, offering integrated creative, digital, and media services. While serving many verticals including entertainment, it does not specialize in pachinko and operates at much larger scale with broader portfolio offerings.
• Digital Holdings: Digital Holdings is a Japanese digital advertising and marketing holding group operating agencies across search, social, programmatic, and creative. A broad incumbent with overlapping digital marketing services but no pachinko vertical specialization.
• Dentsu: Dentsu is Japan's largest advertising group and a global advertising leader, offering end-to-end creative, media, digital, and consulting services. As a broad incumbent, it competes on scale and portfolio breadth rather than vertical specialization in pachinko.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/%E6%A0%AA%E5%BC%8F%E4%BC%9A%E7%A4%BE%E3%83%97%E3%83%A9%E3%82%B9%E3%82%A2%E3%83%AB%E3%83%95%E3%82%A1

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 株式会社プラスアルファ