What COREUS does

株式会社COREUS (COREUS Co., Ltd., trade name コアラス / Koalasu) is a privately held Japanese e-commerce operations agency founded in April 2010 and headquartered near Shinjuku-gyoenmae Station in Tokyo. The company positions itself as a one-stop outsourcing partner for large Japanese enterprise e-commerce operators, with a stated focus on major fashion brands and globally recognized sporting goods manufacturers running storefronts on Rakuten Market and Yahoo! Shopping. Its service portfolio spans the full EC value chain: site construction, creative web design, day-to-day store operations management, mail-order fulfillment management, creative production paired with advertising operations, web consulting (including market trend and competitor analysis for new site launches), and event planning/management. The company claims client storefronts that have won Rakuten Shop of the Year, Rakuten Shop of the Month, and Yahoo! Shopping Monthly Best Store awards, and it has been listed in the EC Industry Correlation Chart in 2019 and 2020, with a 2014 Nihon Keizai Shimbun (Nikkei) feature providing additional third-party visibility.

COREUS operates a remote-first delivery model with a headcount in the 1–10 range and registered capital of ¥10,000,000. It is bootstrapped, with no disclosed funding rounds, parent company, or institutional investors; Representative Director and CEO Takeuchi Koji (竹内孝次) leads the firm. The go-to-market motion is sales-led and B2B, executed through direct enterprise engagements (project-based or retainer) and supported by a content-driven website and selective participation in Tokyo Metropolitan Government telework events. Customer segments are horizontal in approach but vertical in practice: large Japanese e-commerce brands with annual revenues in the tens to hundreds of billions of yen. There is no public pricing; engagements are quote-based and tailored to client needs. The company opened a new Shinjuku office in January 2026 to support expansion and launched an internship program in March 2026, signaling an intent to scale delivery capacity beyond the historical sub-10-person footprint. No proprietary technology, patents, AI/ML capabilities, or data assets are disclosed, and the company's competitive identity rests on marketplace channel expertise, a values-driven professional culture, and a track record of client award recognition.

Name

COREUS

Legal name

株式会社COREUS

Website

https://coreus.co.jp

Company type

Private

Founded year

2010

Operating status

Operating

Headcount range

1–10 employees

Short description

株式会社COREUS (COREUS Co., Ltd.) is a Tokyo-based, remote-first Japanese e-commerce operations agency that provides end-to-end EC site construction, design, operations outsourcing, advertising, consulting, and event services primarily to large Japanese fashion and sporting goods brands on Rakuten and Yahoo! Shopping.

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

Revenue model

1. E-commerce Operations Agency Services: COREUS operates as an e-commerce outsourcing agency offering full-stack support including site construction, creative/web design, advertising agency services, consulting, and event management. Revenue is generated through service fees for these agency engagements.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

COREUS is a B2B e-commerce operations agency (EC site operation outsourcing) providing full-stack support to large Japanese enterprise e-commerce operators. Services span EC site construction, web/creative design, day-to-day store operation management, mail-order fulfillment management, online advertising agency work, web consulting, and event management — primarily delivered for clients operating storefronts on Japan's Rakuten Market and Yahoo! Shopping platforms.

Product overview

COREUS operates as an EC (e-commerce) site operation outsourcing company offering a unified service portfolio. The core offering is the EC One-stop Service (ECワンストップサービス), which encompasses site construction, design, operation management, and fulfillment. Supporting services include web consulting, creative production and advertising operations, and event management. All services are delivered remotely with a focus on helping client EC sites increase sales through strategic operations on major Japanese marketplaces such as Rakuten and Yahoo Shopping.

Differentiator

Problem solved

Functional benefit

Products and services

• EC One-Stop Service (ECワンストップサービス)
• EC Site Construction (ECサイト構築)
• EC Site Design (ECサイトデザイン)
• EC Site Operation Management (ECサイト運営代行)
• Mail-Order Full Fulfillment Management (通販フルフィルメントマネージメント)
• Creative Production and Advertising Operations (クリエイティブ制作～広告運用)
• Web Consulting (コンサルティング)
• Event Business (イベント事業)

Named customers3 records

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Four partnerships are on record, tiered core and minor.

• 楽天市場coreChannel Partner/ Reseller/ DistributorCOREUS manages e-commerce stores for its clients on Rakuten Market, Japan's largest e-commerce marketplace with over 40,000 stores. Multiple COREUS client stores have won Rakuten Shop of the Year and Monthly Best Store awards, demonstrating a strong operational track record on the platform.
• Yahoo!ショッピングcoreChannel Partner/ Reseller/ DistributorCOREUS operates e-commerce stores for its clients on Yahoo! Shopping. Client stores have been recognized as Monthly Best Store, ranking among the top 3 stores based on customer ratings and sales performance.
• 東京テレワーク推進センターminorStrategic or Co-development PartnerCOREUS participated in a telework job matching event organized by the Tokyo Telework Promotion Center in September 2023. COREUS's representative spoke at the event, highlighting the company's remote-first culture and operations.
• 東京都 (テレワークJOBフェア)minorStrategic or Co-development PartnerCOREUS participated in the Tokyo Metropolitan Government-sponsored Telework Job Fair in February 2025, as part of the city's initiative to promote remote work.

Scale indicators2 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• BEENOS Inc. Japanese e-commerce enablement company offering cross-border EC support, marketplace operations, and digital services. Comparable to COREUS in providing outsourced e-commerce operations and growth services to brand owners.
• transcosmos inc. One of Japan's largest BPO and digital service providers, with a substantial e-commerce operations outsourcing business serving major Japanese enterprises on Rakuten, Yahoo! Shopping, and other channels. Closest large-scale functional peer to COREUS's EC operations agency model.
• Scroll Corporation: Japanese EC and catalog operations company providing outsourced storefront management, fulfillment, and marketing for large mail-order and e-commerce brands. Directly comparable to COREUS's EC operations outsourcing and fulfillment management services.
• Itsumo Inc. (いつも.株式会社): Boutique Japanese e-commerce agency focused on Rakuten, Yahoo! Shopping, and other marketplaces. Mirrors COREUS's model of full-stack EC operations support for enterprise brands in Japan, making it the most direct small-agency comparable.

Broad incumbents

• ecbeing Co., Ltd. Established Japanese e-commerce platform and services vendor serving large enterprise retailers. Overlaps with COREUS on EC site construction and operations for enterprise clients, but at much larger scale and with proprietary technology.
• Dentsu Inc. Japan's largest advertising and marketing services group. Its digital and commerce practices compete for the same enterprise EC advertising and consulting budgets that COREUS targets, but as part of a much broader portfolio.
• Hakuhodo Inc. Major Japanese advertising agency with significant digital and commerce capabilities. Competes for enterprise EC creative, advertising, and consulting mandates alongside COREUS, but with a far broader service portfolio.
• Accenture plc: Global consulting and digital services firm with a large Japanese practice in commerce and marketing. Competes with COREUS for enterprise digital commerce engagements, but at vastly larger scale and with a consulting-led model.

Others

• Adobe Inc. Provider of Adobe Commerce (Magento) and the broader Adobe Experience Cloud used by Japanese e-commerce operators. Adjacent ecosystem player whose platforms shape the tool stack that COREUS and its clients rely on for EC site construction and operations.

Emerging players

• GMO MakeShop Co., Ltd. Japanese EC platform and services provider powering many Rakuten-adjacent storefronts. While it operates a platform rather than a pure agency, its end-to-end EC tools compete with parts of COREUS's site construction and operations offering.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/coreus0406

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 COREUS