What Koki does

Koki Co., Ltd. (株式会社光貴) is a Japanese service company operating two distinct business segments headquartered in Ginowan City, Okinawa. The larger mobile communications business runs 24 au shop and UQ spot retail stores across Okinawa, Fukuoka, and Nagasaki prefectures as an authorized agent for Okinawa Cellular Telephone and KDDI, generating revenue from mobile device sales, new contract brokerage commissions, plan change fees, after-sales support, and billing collection. The company does not develop proprietary technology platforms; its competitive positioning rests on customer-facing service quality, demonstrated by repeated CX AWARD wins and the first-ever highest evaluation from Okinawa Cellular Telephone's agent evaluation system in June 2022.

The second segment, bridal services, operates under the Lumiere and Voyage du Lumiere brands, providing end-to-end wedding production including venue rental, dress and attire rental, photography, food and beverage at reception facilities, and travel arrangements for out-of-town guests. As of 2026, bridal facilities are positioned in Okinawa (Chatan), Okayama (acquired April 2026 from Bridal House Chuchu), and Kyoto (scheduled to close December 2026). The company also runs a small corporate sales division proposing enterprise mobile, FMC, and cloud services.

Koki listed on the Fukuoka Stock Exchange Fukuoka PRO Market on March 31, 2025, and reported FY March 2026 revenue of ¥7,726,960 thousand (approximately ¥7.73 billion). Headcount stood at 197 full-time employees as of May 2026, up from 175 in January 2026. Leadership transitioned in April 2022 when founder Kozo Mayama moved to Chairman and Masami Saito, formerly of Nomura Securities and Mizuho Securities, was appointed President, ahead of the subsequent IPO and an active M&A-led growth strategy that has already absorbed three au shops from Telema and one bridal facility in Okayama.

Name

Koki

Legal name

株式会社光貴

Website

https://koki.inc

Company type

Public

Founded year

1993

Operating status

Operating

Headcount range

101–250 employees

Short description

Koki Co., Ltd. operates 24 au/UQ mobile retail stores across Okinawa, Fukuoka, and Nagasaki as an authorized KDDI/Okinawa Cellular agent, and runs Lumiere and Voyage du Lumiere bridal facilities in Okinawa, Okayama, and Kyoto serving couples planning weddings.

Ownership category

akta.pro rank

Product category

Telecommunications Retail & Bridal Services

NAICS

Telecommunications Resellers and Agents for Wireless Telecommunication Services (51712)

akta.pro primary industry

Full-Service Wedding Planning (HSACABAA)

akta.pro secondary industries

Destination Wedding Planning (HSACABAD), Reception Planning & Guest Experience (Seating, Favors, Hospitality) (HSACABAM), Vendor Sourcing & Management (Venues, Catering, Photo/Video, Music) (HSACABAG)

Keywords

• Mobile retail agency
• Wedding venue services
• Bridal salon operations
• Telecommunications retail
• Carrier authorized agent

Headquarters

HQ city

Ginowan

HQ country

Japan

HQ region

Asia

Offices29 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

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

Revenue model

1. Mobile Communications Agency Revenue: Revenue is generated as an authorized agent of Okinawa Cellular Telephone and KDDI through commission fees on new contracts, device sales, plan changes, and after-sales services. The company also sells mobile devices and accessories, and processes billing collections.
2. Bridal Services Revenue: Revenue is generated through venue rental fees, wedding planning service fees, dress and attire rental, photography and photo shoot packages, food and beverage at reception facilities, and travel arrangement services for out-of-town guests.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

Koki operates two primary business segments. The mobile communications business runs 24 au shop, au Style, and UQ spot retail stores across Okinawa, Fukuoka, and Nagasaki as an authorized agent of Okinawa Cellular Telephone and KDDI, selling mobile devices, brokering carrier contracts, and providing after-sales support. The bridal business operates wedding salons, chapels, and reception venues under the Lumiere and Voyage du Lumiere brands in Chatan (Okinawa), Okayama City, and Kyoto City, offering end-to-end wedding production including dress rental, photography, and guest travel arrangements.

Product overview

Koki operates two main business segments: a mobile communications business and a bridal business. The mobile communications segment operates 24 au shop and UQ spot retail stores across Okinawa, Fukuoka, and Nagasaki as an authorized agent for Okinawa Cellular Telephone and KDDI Corporation, offering device sales, contract processing, and after-sales support with award-winning customer service. The bridal business operates under the Voyage du Lumiere brand, managing wedding venues and salons in Okinawa, Okayama, and Kyoto, including the Chatan Resort, Kyoto facility, Lumiere Chatan Salon, and Lumiere a Style Okayama, while also providing dress rental and photo wedding services.

Differentiator

Problem solved

Functional benefit

Brands

• ヴォヤージュ ドゥ ルミエール 北谷リゾート: 沖縄・北谷町美浜アメリカンビレッジ内のリゾートチャペル施設
• ヴォヤージュ ドゥ ルミエール 京都七条迎賓館
• ルミエール北谷サルーン
• ルミエール ア スタイル オカヤマ

Products and services

• Mobile Communications Agency Services (au shop / au Style / UQ spot) Operates 24 au shop, au Style, and UQ spot retail stores across Okinawa, Fukuoka, and Nagasaki prefectures as an authorized agent for Okinawa Cellular Telephone and KDDI. Services include mobile phone and device sales, new contract brokerage, plan changes, billing collection, repair services, fixed-line internet proposals, and after-sales support for individual consumers.
• Voyage du Lumiere Chatan Resort (ヴォヤージュ ドゥ ルミエール 北谷リゾート) Resort wedding venue in American Village, Chatan, Okinawa, featuring ocean-view chapels and banquet halls with Ryukyu-inspired French cuisine, serving couples seeking destination weddings.
• Voyage du Lumiere Kyoto Shichijo (ヴォヤージュドゥルミエール京都七条迎賓館) Private wedding venue in Kyoto offering one-group-per-day ceremonies, located in a registered tangible cultural property building. Scheduled to close December 1, 2026 per company announcement.
• Lumiere Chatan Salon (ルミエール北谷サロン) Large bridal salon in Chatan, Okinawa, offering over 200 dress and attire options, dress rental, photo wedding, and comprehensive wedding planning services for couples.
• Lumiere a Style Okayama (ルミエール ア スタイル オカヤマ) Luxury bridal venue on the top floor of GEEKS OKAYAMA building in Okayama City, acquired from Bridal House Chuchu on April 1, 2026. Offers panoramic city views, customizable original wedding courses, and an adjacent restaurant Lumiere a Sora.
• Photo Wedding Service (フォトウェディング) Photography-only wedding service including location shoots at popular Okinawa spots such as Araha Beach, chapels, and UNESCO World Heritage sites, with dress rental and makeup services bundled. Targets couples preferring photo-only weddings without a full ceremony.
• Corporate Mobile Sales (法人営業) Corporate sales service offering business mobile contracts, fleet mobile management, FMC (fixed-mobile convergence) and cloud service proposals, and digital transformation (DX) and telecommuting support for enterprise clients, served by a dedicated corporate sales team.

Quantifiable outcome

• Numerous CX AWARD wins (2013 Grand Prix Okinawa, 2015 Branch Manager Award Kitakyushu, multiple runner-up and finalist placements 2016-2024)
• +1 more outcomes

Named customers2 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Two partnerships are on record, tiered core.

• 株式会社ブライダルハウスチュチュcoreStrategic or Co-development Partner · 20 February 2026Koki acquired bridal facilities ザ・スタイル and レストランSORA from株式会社ブライダルハウスチュチュ in Okayama City for ¥37,772 thousand (cash settlement), with an effective transfer date of April 1, 2026. The acquisition provides Koki with wedding facility operational expertise for 150-capacity venues.
• 株式会社テレマcoreStrategic or Co-development Partner · 14 November 2025Koki acquired three au shops from株式会社テレマ (auショップがねこ, auショップなは南, auショップはえばる) with an effective transfer date of December 1, 2025. This acquisition expanded Koki's regional footprint in Okinawa and improves workforce optimization and operational efficiency.

Scale indicators10 records

Recent moves13 records

Expansion highlights6 records

Emerging players

• BrideHouse Co., Ltd. (Bridal House Tsumugi): Japan bridal jewelry retailer and comprehensive wedding services provider. Comparable as an adjacent bridal-services specialist; overlaps with Koki on bridal-jewelry-supply, attire, and pre-wedding services even though Koki's focus is venue-led.
• I-PRIMO Co., Ltd. (Cicuco): Specialized engagement and wedding jewelry retailer in Japan with a broad store network. Comparable to Koki's bridal segment at the jewelry-supply touchpoint of the wedding journey, though operating a pure retail-jewelry model rather than venues.

Direct peers

• Watabe Wedding Co., Ltd. Japanese wedding production and venue operator specializing in domestic and destination weddings across resort locations including Okinawa and Kyoto. Directly comparable to Koki's Voyage du Lumiere bridal segment, which similarly offers resorts, chapels, and heritage venues in Okinawa and Kyoto.
• Aoyama Wedding Co., Ltd. Long-standing Japanese bridal house with gown and venue operations. Comparable to Koki's bridal salons (e.g., Lumiere Chatan Salon) that offer dress rental and comprehensive wedding planning.
• Best Bridal Inc. Japanese bridal venue chain operating guest-house and chapel-style weddings with a national footprint of owned facilities. Comparable to Koki's Lumiere brand as both operate owned physical venues with on-site ceremony, reception, and F&B.
• Take and Give Needs Co., Ltd. (TGNC): One of Japan's largest wedding production companies operating multiple bridal venue brands across major cities. Comparable to Koki's full-service bridal production model spanning dress, venue, photography, and ceremony coordination.

Broad incumbents

• Bic Camera Inc. Major Japanese consumer-electronics and mobile retailer carrying multiple carriers at high-traffic locations. Comparable as a broader mobile-retail incumbent that competes for the same end-customer mobile purchase occasions, but at much larger scale and as a multi-line retailer rather than specialist agent.
• KDDI Corporation: Parent carrier whose au and UQ mobile brands are exclusively retailed by Koki as an authorized agent. Critical counterpart and channel partner for the majority of Koki's revenue; defines commission terms, store-of-the-future standards, and exclusive product availability for Koki.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries4 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 Koki