| 1971-06 |
June 1971: Established Uchiyama Building Co., Ltd. in Kokura Kita‑ku, Kitakyushu City, Fukuoka Prefecture, for real estate sales and lease management. |
| 1987-03 |
March 1987: Established House Twenty‑Two Co., Ltd. in Kokura Kita‑ku, Kitakyushu City, Fukuoka Prefecture, for building cleaning and management. |
| 1987-12 |
December 1987: Established Amenity Co., Ltd. in Kokura Kita‑ku, Kitakyushu City, Fukuoka Prefecture, for real estate sales and lease management. |
| 1990-02 |
February 1990: Acquired Saito Ltd., which operated hotel business. |
| 1991-04 |
April 1991: Opened the first karaoke box "Korokke Club Kurozaki" in Yawata Nishi‑ku, Kitakyushu City, Fukuoka Prefecture, under Saito Ltd. |
| 1994-06 |
June 1994: Established Kouno Ltd. (now BONA Co., Ltd.) in Kokura Minami‑ku, Kitakyushu City, Fukuoka Prefecture, for karaoke store operations. |
| 1995-04 |
April 1995: Reorganized Saito Ltd. into BONA Co., Ltd. (formerly BONA Co., Ltd.). |
| 1995-10 |
October 1995: Established Zen Corporation Co., Ltd. in Kokura Kita‑ku, Kitakyushu City, Fukuoka Prefecture, for restaurant operations. |
| 1995-11 |
November 1995: Opened the first restaurant "Sakezenbō Zen" in Kokura Kita‑ku, Kitakyushu City, Fukuoka Prefecture, at Zen Corporation Co., Ltd. |
| 2001-07 |
July 2001: Established Noah Ltd. in Kokura Kita‑ku, Kitakyushu City, Fukuoka Prefecture, for karaoke store operations. |
| 2003-04 |
April 2003: At Uchiyama Building Co., Ltd., opened the combined facility "Sawayaka Parkside Shinagawa", a paid nursing home with care services and day service, in Tobata-ku, Kitakyushu City, Fukuoka Prefecture. |
| 2004-12 |
December 2004: The care division was newly split from Uchiyama Building Co., Ltd., and Sawayaka Club Co., Ltd. was established in Kokuraminami-ku, Kitakyushu City, Fukuoka Prefecture. |
| 2005-02 |
February 2005: Sawayaka Club Co., Ltd. absorbed and split the care division of Kouno Ltd. |
| 2005-08 |
August 2005: Kouno Ltd. was reorganized into Kouno Co., Ltd. |
| 2005-11 |
November 2005: Kouno Co., Ltd. absorbed and merged six affiliated companies (formerly BONA Co., Ltd., Uchiyama Building Co., Ltd., Amenity Co., Ltd., House Twenty-Two Co., Ltd., Zen Corporation Co., Ltd., and Noah Ltd.) as the surviving company, and changed its name to BONA Co., Ltd. (now BONA Co., Ltd.). |
| 2006-10 |
Established Uchiyama Holdings Co., Ltd. as the holding company of Sawayaka Club Co., Ltd. and BONA Co., Ltd. through a transfer of shares. |
| 2008-07 |
Opened the combined hotel and residential-type paid nursing home facility 'Sawayaka Heartpia Meibō' in Beppu City, Oita Prefecture, by Sawayaka Club Co., Ltd. |
| 2009-11 |
Established Sawayaka Amanogawa Co., Ltd. in Hirakata City, Osaka Prefecture, as a subsidiary of Sawayaka Club Co., Ltd. |
| 2012-04 |
Listed shares on JASDAQ (Standard) of the Osaka Stock Exchange (now Tokyo Stock Exchange). |
| 2012-12 |
Sawayaka Club Co., Ltd. absorbed Sawayaka Amanogawa Co., Ltd. |
| 2013-12 |
Changed market to the Second Section of the Tokyo Stock Exchange. |
| 2014-08 |
BONA Co., Ltd. established a joint venture, Bonheure (Thailand) Co., Ltd., in Thailand. |
| 2014-09 |
Designated to the First Section of the Tokyo Stock Exchange. |
| 2014-11 |
Opened the first overseas store, "Kantekiya Sukhumvit", in Bangkok, Thailand at Bonheure (Thailand). |
| 2015-11 |
Opened the first disability support facility and after‑school day service "Sawayaka Ai no Ie" at Sawayaka Club Co., Ltd. |
| 2016-05 |
Sawayaka Club Co., Ltd. made Life Care Shimada Ltd. a subsidiary. |
| 2016-09 |
Opened the first home‑visit nursing facility "Sawayaka Visiting Nursing Station Yawata" at Sawayaka Club Co., Ltd. |
| 2016-10 |
Sawayaka Club Co., Ltd. absorbed Life Care Shimada Ltd. |
| 2018-07 |
Sawayaka Club Co., Ltd. established a joint venture PT. Sawayaka Fujindo Indonesia in Indonesia and opened a vocational training school specializing in Japanese language education. |
| 2021-04 |
Change of president: Fumiharu Uchiyama became Chairman of the Board of Directors, and Takehiko Yamamoto became President. |
| 2021-06 |
Celebrated the 50th anniversary of the group's founding. |
| 2022-04 |
Moved to the Standard market following the restructuring of the Tokyo Stock Exchange. |
| 2025-01 |
Sawayaka Club Co., Ltd. absorbed BONA Co., Ltd. |
