Nak Co., Ltd.

Established Nak Co., Ltd. in Machida City, Tokyo. Capital of 2 million yen. Started rental (Daskin) business.

Nak Co., Ltd. began its journey in 1971 when founder Yūyuki Nishiyama (now Honorary Chairman) started a cleaning supplies rental business as a Dusskin franchisee in Machida City, Tokyo.

Established Nak Co., Ltd. in Machida City, Tokyo: Capital 2 million yen: Rental (Dusskin) business started: Established Nak Co., Ltd. in Machida City, Tokyo Image: Capital 2 million yen Dusskin business started Image

Since its founding in 1971 (Showa 46)

In 1971, founder Yusuke Nishiyama (now Honorary Chairman) started a cleaning supplies rental business as a Duskinn franchise in Machida City, Tokyo, marking the beginning of the company's journey.

Moved headquarters to Shinjuku Center Building in central Tokyo.

Moved headquarters to Shinjuku Center Building in central Tokyo: Moved headquarters to Shinjuku Center Building Image

Celebration of Nak's 10th anniversary.

Nak 10th Anniversary Celebration: Nak 10th Anniversary Celebration Image

Since achieving the top sales in Japan for the Daskin business (about 2,500 franchise stores at the time), continues to hold the highest sales.

Achieved Japan's highest sales in the Dusskin business (about 2,500 franchise stores at the time) and have continued to hold the top sales figure since then.

Celebration of Nak's 15th anniversary.

Nak 15th Anniversary Celebration: Nak 15th Anniversary Celebration Image

Started the Environment Hygiene With business.

Started the Wiz business: Environmental Hygiene Wiz business start Image

In 1988, we launched the pest control device 'Wiz'.

Started architecture consulting business. Nak's 20th anniversary Hawaii trip.

Started architectural consulting business: Nak 20th Anniversary Hawaii trip: Architectural consulting business start Image: Nak 20th Anniversary Hawaii trip Image

Public listing of shares (registration code: 9788).

Stock market listing (registration code: 9788): Stock market listing Image01: Stock market listing Image02

Listed on the Second Section of the Tokyo Stock Exchange. Designated as a margin trading stock.

Listed on the Second Section of the Tokyo Stock Exchange: Designated as a margin trading stock

Promoted to the First Section of the Tokyo Stock Exchange. Expanded the Duskin sales area to Fukuoka Prefecture through M&A.

Promoted to the First Section of the Tokyo Stock Exchange: M&A to Fukuoka Prefecture: Expanded Dusskin sales area

In 1999 (Heisei 11), it became listed on the First Section of the Tokyo Stock Exchange

30th anniversary of Nack's founding: Millennium trip.

Nak 30th Anniversary Millennium trip: Nak 30th Anniversary Millennium trip Image

Started residential business. Joined Japan Business Federation. Started Crikura (home delivery water) business.

Started residential business: Joined Japan Business Federation: Started Kurikura (home delivery water) business: Kurikura (home delivery water) business start Image: Residential business start Japan Business Federation Image

In 2002, we launched the home delivery water service 'KuriClara'.

Expanded Duskin sales area to Ibaraki Prefecture through M&A.

Expanded Dusskin sales area to Ibaraki Prefecture through M&A: Expanded Dusskin sales area to Ibaraki Prefecture Image

Capital increased to 4 billion yen.

Capital increased to 4 billion yen

Achieved consolidated sales of 50 billion yen.

Achieved consolidated sales of 50 billion yen

40th anniversary of Nack's founding: celebration.

Nak 40th Anniversary Celebration: Nak 40th Anniversary Celebration Image

Established Nack Life Partners Inc. Acquired shares of Ernest Inc. and integrated into the group.

Established Nak Life Partners Co., Ltd.: Acquired shares of Ernest Co., Ltd. and integrated into the group: Established Nak Life Partners Co., Ltd. Image

Started mail-order business. Acquired shares of JIMOS Inc. and J-Wood Inc. and integrated into the group.

Started e-commerce business: Acquired shares of JIMOS Co., Ltd. and J Wood Co., Ltd. and integrated into the group: Acquired shares of JIMOS Co., Ltd. and J Wood Co., Ltd. and integrated into the group Image01: Acquired shares of JIMOS Co., Ltd. and J Wood Co., Ltd. and integrated into the group Image02

Established Crikura Museum in Honjo City, Saitama Prefecture. Acquired shares of Eco & Eco (now Nax Smart Energy Co., Ltd.) and integrated into the group.

In Honjo City, Saitama Prefecture: Established Kurikura Museum: Nak Smart Energy Co., Ltd. (formerly Eco & Eco Co., Ltd.): * Acquired shares and integrated into the group: * After being absorbed into Ace Home Co., Ltd. in April 2023, continued as a smart energy business: Established Kurikura Museum in Honjo City, Saitama Prefecture Image: Acquired shares of Eco & Eco (now Nak Smart Energy Co., Ltd.) and integrated into the group Image

Acquired shares of KDI Inc. and integrated into the group. Acquired shares of Bell Air Inc. and integrated into the group.

Acquired and grouped the shares of KDI Inc. : Acquired and grouped the shares of Bell Air Inc. : * Merged into Tremi Inc. in April 2026

Acquired shares of Kunimoku House Inc. and integrated into the group. Continued as the KUNIMOKU HOUSE brand after being absorbed into J-Wood Inc. in April 2021.

Acquired and grouped shares of KUNIMOKU HOUSE Co., Ltd. : * After merging into J Wood Inc. in April 2021, continued as the KUNIMOKU HOUSE brand : Acquired and grouped shares of KUNIMOKU HOUSE Co., Ltd. Image

Reorganized mail-order business into beauty and health business. Capital increased to 6,792,493,750 yen.

Reorganized the mail-order business into a beauty and health business : Increased capital to 6,792,493,750 yen

Acquired shares of Ace Home Inc. and integrated into the group. Transferred shares of Leo House Inc. In April 2023, after being absorbed into Nax Smart Energy Co., Ltd., renamed to Nack House Partners Inc.

Ace Home Co., Ltd. : * Acquired and grouped shares : Transferred shares of Leo House Co., Ltd. : After merging into Nax Smart Energy Co., Ltd. in April 2023, renamed to Nax House Partner Co., Ltd. : Acquired and grouped shares of Ace Home Co., Ltd. Image

50th anniversary of Nack's founding. Acquired shares of Tremi Inc. and integrated into the group. Established Upsale Inc. In April 2025, absorbed into JIMOS Inc.

Nax 50th anniversary of founding : Acquired and grouped shares of Tremi Inc. : Upsale Co., Ltd. : * Established : Merged into JIMOS Inc. in April 2025 : Acquired and grouped shares of Tremi Inc. Image : Established Upsale Co., Ltd. Image

Transitioned to the Prime Market of the Tokyo Stock Exchange.

Transitioned to the Tokyo Stock Exchange Prime Market

Established Crikura Nagasaki Inc. Acquired shares of Kenz Inc. and integrated into the group.

Established KuriClara Nagasaki Co., Ltd. : Acquired and grouped shares of KANZ Co., Ltd.

Acquired shares of Taba Wine & Spirits Co., Ltd. and integrated into the group. Also acquired shares of Shuwa Juken Co., Ltd. and Combo Box Co., Ltd. In September 2024, renamed to TOMOE Wine & Spirits Co., Ltd.

Taka Wine & Spirits Co., Ltd. : * Acquired and grouped shares : Acquired and grouped shares of Shuwa Juken Co., Ltd. : Acquired and grouped shares of ComboBox Co., Ltd. : In September 2024, renamed to TOMOE Wine & Spirits Co., Ltd. : Acquired and grouped shares of Taka Wine & Spirits Co., Ltd. Image : Acquired and grouped shares of Shuwa Juken Co., Ltd. Image

Established Nack Yes Smart Inc. In March 2026, absorbed into Nack Inc.

Nax Yes Smart Co., Ltd. : * Established : Merged into Nax Inc. in March 2026 : Established Nax Yes Smart Co., Ltd. Image

Acquired shares of Crikura Ehime Inc. and integrated into the group. Also acquired shares of Good Life Business Support Inc.

2026: Acquired and grouped shares of KuriClara Ehime Co., Ltd. : Acquired and grouped shares of Good Life Business Support Co., Ltd.