株式会社イズミ

What 株式会社イズミ does

株式会社イズミ (IZUMI Co., Ltd.) is a private Niigata Prefecture-based company that operates 米選 (Maisen), a direct-to-consumer e-commerce platform selling premium regional specialty foods from Joetsu, Niigata, to consumers across Japan. Originally established in April 1979 as a residential infrastructure and construction firm (plumbing, HVAC, civil engineering), the company diversified into internet retailing through Maisen, with the storefront operating continuously for 17 years (since ~2009). The company is registered with ¥30 million in capital and reports a small workforce (12 firmographic employees; 19 as of April 2019).

The Maisen platform offers a curated catalog of Niigata-origin products: multiple rice varieties (Koshihikari, Koshiiibuki, Mizuhonokagayaki, Shinnosuke, Asahi Koshihikari, plus natural and special-cultivation grades), Kogane mochi, Japanese sake (Katafune from Takeda Sake Brewery, Gintangawa from Daidaigiku Brewing), and processed foods (umeboshi, rakkyo, miso, free-range eggs, soybeans, kamaboko from Uozumi Kamaboko). The storefront runs on ShopServe e-commerce infrastructure with SSL-secured checkout via CrossTrust digital certification, supporting PC and smartphone storefronts and integrating nine payment methods including PayPay, Rakuten Pay, d-barai, auPAY, credit card, convenience store, bank transfer, and cash on delivery. Nationwide shipping is fulfilled via Sagawa Express and Yu-Pack from Joetsu.

The business operates three revenue streams: one-time product purchases, recurring subscription delivery (3-month and 6-month rice courses), and gift/corporate orders with seasonal packaging for occasions such as New Year, ochugen, oseibo, and obon. Go-to-market is direct-to-consumer nationwide, supplemented by a secondary restaurant/hospitality bulk-order channel. Marketing relies on owned-site content (farm profiles, agricultural diary, seasonal campaign pages), a Facebook page, a Twitter/X account (@maisen_joetsu), and email seasonal pre-order campaigns timed to the late-summer new rice harvest. The company sources through direct procurement relationships with five core partner producers in Niigata, emphasizing farm-to-doorstep freshness and producer transparency.

Name

株式会社イズミ

Legal name

株式会社イズミ

Website

https://rs-maisen.jp

Company type

Private

Founded year

1979

Operating status

Operating

Headcount range

11–50 employees

Short description

株式会社イズミ (IZUMI Co., Ltd.) operates 米選 (Maisen), a direct-to-consumer e-commerce platform selling premium Niigata specialty foods — rice, mochi, sake, and processed foods — to individual consumers nationwide through subscriptions, gift sets, and one-time purchases sourced from local partner farms and breweries.

Ownership category

akta.pro rank

Product category

Online Specialty Food Retail

NAICS

Fish and Seafood Merchant Wholesalers (42446), All Other Food Manufacturing (31199), Food Manufacturing (311)

SIC

Food And Kindred Products (2000), Prepared Fresh Or Frozen Fish & Seafoods (2092), Canned, Frozen & Preservd Fruit, Veg & Food Specialties (2030)

akta.pro primary industry

Ethnic Frozen & Refrigerated Foods Wholesale (AFAIAIAB)

akta.pro secondary industries

Fermented & Specialty Condiments Manufacturing (Kimchi Base, Gochujang, Miso-Based Sauces) (AFAKADAO), Ethnic Meat, Poultry & Seafood Wholesale (AFAIAIAC)

Keywords

• Premium rice retail
• Japanese sake sales
• Mochi distribution
• Regional food e-commerce
• Subscription delivery

Headquarters

HQ city

Joetsu (上越市)

HQ country

Japan

HQ region

Asia

Offices2 records

Markets served

GTM type

B2B and B2C

Offering type

Digital Commerce or Content

Cost components

Personnel, Operations, Supply Chain, Marketing or Sales, Infrastructure, Others

Revenue model

1. Product Sales (Rice, Mochi, Sake, Processed Foods): One-time purchase of food products including Niigata rice (Koshihikari, Koshiiibuki, Mizuhonokagayaki, Shinnosuke, Asahi Koshihikari), specialty mochi (Kogane mochi varieties), Japanese sake (Katafune, Gintangawa), processed foods (pickled plums, rakkyo, miso, eggs, soybeans, kamaboko). Sales through e-commerce storefront with national home delivery.
2. Subscription / Recurring Delivery: Monthly rice delivery subscriptions in 3-month and 6-month courses for Koshihikari, Koshiiibuki, Mizuhonokagayaki, and Shinnosuke varieties. Delivered at discounted rates compared to one-time purchases. Generates recurring revenue through subscription renewals.
3. Gift / Corporate Orders: Gift sets including boxed rice (5kg gift boxes), rice and mochi combinations, multi-product samplers, and sake sets for gifting occasions (New Year, festivals, corporate gifts). Premium packaging with gift-wrapping, noshi, and message cards offered.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels5 records

Core offering

株式会社イズミ operates 米選 (Maisen), a direct-to-consumer e-commerce storefront at rs-maisen.jp that sells Niigata Prefecture regional specialty foods — premium rice varieties (Koshihikari, Koshiiibuki, Mizuho no Kagayaki, Shinnosuke, Asahi Koshihikari, plus special-cultivation and natural-farming grades), traditional Kogane mochi, Japanese sake (Katafune and Gintangawa brands), kamaboko fish cakes, and farm-processed foods (umeboshi, miso, eggs, soybeans, pickled rakkyo). Products are sourced from partner farms (Nirei Farm, Asahiike General Farm) and breweries (Takeda Sake Brewery, Daidaigiku Brewing) in Joetsu, Niigata and delivered nationwide via Sagawa Express and Yu-Pack. The parent company separately operates a designated-contractor construction business for gas, water, plumbing, HVAC, civil engineering, and home renovation in the Joetsu-Myoko region.

Product overview

株式会社イズミ operates 米選 (Maisen), an e-commerce platform specializing in regional specialty products from Joetsu, Niigata Prefecture. The platform functions as a marketplace connecting local farmers and producers with nationwide customers. Core offerings include premium Japanese rice varieties (コシヒカリ, こしいぶき, みずほの輝き, 新之助, 朝日コシヒカリ, 自然栽培米, 特別栽培米), traditional rice cakes (こがね餅系列), Japanese sake (かたふね, 吟田川), processed foods (梅干し, 味噌, 大豆, らっきょう, 豆菓子), free-range eggs, and kamaboko (魚住かまぼこ). The platform offers subscription delivery services, trial/sample sets, and gift packaging for special occasions. Partner farms include 楡井農場, 朝日池総合農場, 竹田酒造店, 代々菊壇造, and 魚住かまぼこ店. Payment integration includes PayPay, Rakuten Pay, d Payment, auPAY, credit cards, convenience store payments, and bank transfer. Shipping via Sagawa Express and Yu-Pack with cool delivery options for perishables.

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• Site operating for 17th year (as of 2026)

Named customers1 record

Segments2 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration9 records

Partnerships

Five partnerships are on record, tiered core and minor.

• 楡井農場 (Nirei Farm)coreStrategic or Co-development PartnerPrimary partner rice farm supplying Koshihikari, Koshiiibuki, Shinnosuke, and specialty cultivated rice varieties. Nirei Farm is a large-scale rice operation with 33 hectares of farmland, operated by 7 staff including owners and 2 additional workers. Featured in Niigata Shimbun for its commitment to quality rice cultivation. Supplies standard Koshihikari,特别栽培米 (special cultivation rice), and 自然栽培米 (natural cultivation rice) to the Maisen platform.
• 朝日池総合農場 (Asahiike General Farm)coreStrategic or Co-development PartnerMulti-product partner farm supplying rice, mochi, and processed foods. Operates a circular agriculture model using ~1,000 chickens, with chicken manure composted and used as fertilizer for rice paddies. Produces Kogane mochi varieties, Asahi Koshihikari, handmade plum pickles (umeboshi), pickled rakkyo, handmade miso, free-range eggs, soybeans, soy-based snacks, and fried mochi. All products use no preservatives or additives.
• 竹田酒造店 (Takeda Sake Brewery)coreStrategic or Co-development PartnerSake brewery in Joetsu City, Ogata Ward, with a history dating back to the Keio 2 era (1866). Produces the Katafune (かたふね) sake brand, known for its rich umami taste profile. Products include Junmai, Junmai Ginjo, Daiginjo, Honzojo, and seasonal limited-edition nigori sakes. Won awards at IWC 2013 and the Japan Sake Awards. Supplies over 20 sake product SKUs to the Maisen platform.
• 代々菊醸造 (Daidaigiku Brewing Co., Ltd.)minorStrategic or Co-development PartnerSake brewery producing the Gintangawa (吟田川) brand. Uses local spring water 'Gintangawa Seimui' and self-cultivated rice 'Gohyakumangoku'. Products include Ginjo, Junmai Ginjo, Special Honzojo, and seasonal snow-stored sake (雪洞/bonbori). Supplies 6 sake SKUs to the Maisen platform.
• 魚住かまぼこ店 (Uozumi Kamaboko Shop)minorChannel Partner/ Reseller/ DistributorTraditional kamaboko (fish cake) maker in Naoetsu, the only such shop in the area. Uses traditional 'stone mill and sitting room' (石臼と坐り) production method. Won the Director of Fisheries Agency Award (水産庁長官賞) for kelp-wrapped kamaboko. Products include white kamaboko, red kamaboko, shrimp, squid, mentaiko, kikurage, mozuku, sake-kasu, and specialty items. Supplied as a specialty regional food category on the Maisen platform.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• 大地を守る会 (Daichi wo Mamoru Kai): Long-established organic and regional-food delivery cooperative selling produce, rice, and processed foods direct from contracted farmers. Directly comparable as a regional-producer curation and home-delivery business.
• 食べチョク (Tabechoku): Japan's leading farmer-to-consumer produce marketplace covering rice, vegetables, fruits, and meat nationwide. Directly comparable as a curated regional-producer aggregation platform with subscription and gift functionality.
• 八代目儀兵衛 (Hachidaimon Gihyoe): Kyoto-based premium Japanese rice and rice-cake e-commerce retailer operating online storefronts with subscription and gifting. Directly comparable as a single-prefecture premium rice DTC brand with producer-story-driven content.
• ポケットマルシェ (Pokket Marche): Producer-to-consumer marketplace enabling direct purchase from individual Japanese farmers and fisheries. Directly comparable as a regional-food DTC platform with producer-profiles, seasonal campaigns, and subscription features.

Broad incumbents

• 無印良品 (Muji): National lifestyle retail brand with a sizable private-label rice and packaged food line sold online nationwide. Comparable as a broad incumbent with cross-category basket potential and much larger marketing reach.
• 生活クラブ (Seikatsu Club): Consumer cooperative offering contracted-producer food delivery including rice and processed items. Comparable as a broad incumbent with a subscription/delivery model and curated-producer positioning.
• JA全農 (JA Zennoh / ZEN-NOH): National federation of Japanese agricultural cooperatives operating nationwide rice, produce, and processed-food distribution. Comparable as a broad incumbent with overlapping producer relationships and a premium-rice product line.
• 楽天市場 (Rakuten Ichiba): Japan's largest third-party marketplace hosting numerous Niigata-region rice and sake merchants. Comparable as a broad incumbent channel where many of Maisen's potential competitors are listed.

Regional players

• 酒蔵ドットコム (Sakagura.com): Japan-focused Japanese sake e-commerce retailer aggregating multiple breweries. Comparable as a multi-producer sake DTC storefront with a similar producer-story content approach on a different category.

Emerging players

• 農業総合研究所 (Nousoken / Agribusiness Research Institute): TSE-listed Japanese agricultural produce e-commerce operator with a nationwide farmer-direct marketplace. Comparable as an emerging technology-enabled platform serving the same farm-to-consumer niche with greater scale.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat2 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/maisen_joetsu
• Facebookfacebook.com/rsmaisen
• LinkedInlinkedin.com/company/%E6%A0%AA%E5%BC%8F%E4%BC%9A%E7%A4%BE%E3%82%A4%E3%82%BA%E3%83%9F

Compliance6 records

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 株式会社イズミ