| 1918 |
Founded in 1918. |
| 1944-05 |
Showa 29 : May : Established Sugai Kogyo Co., Ltd. (capital 1 million yen) at 8-1, Minami 3-jo Nishi, Sapporo. |
| 1954-05-26 |
Established: May 26, 1954 (Showa 29). |
| 1968-10 |
Showa 43 : October : Demolished Sapporo Theater and opened the large mixed leisure complex Sapporo Sugai Building, featuring cinema, bowling, billiards, table tennis, sauna, go-go, restaurants, etc. |
| 1978-12 |
Showa 53 : December : Converted tenants in Sapporo Sugai Building into a game center. Commenced game venue operations. |
| 1981-10 |
Showa 56 : October : Opened Shirakawa Sugai Bowl in Shirakawa-ku, Sapporo, with an attached game venue. Resumed bowling operations. |
| 1982-12 |
Showa 57 : December : Opened Sugai Bowl Apollo in Higashi-ku, Sapporo, with an attached game venue. Introduced the first computer bowling system in the prefecture. |
| 1986-11 |
Showa 61 : November : Opened a billiards hall in Sapporo Sugai Building, adding pocket billiards and reopening. Subsequently expanded billiards halls to various locations. |
| 1988-06 |
Showa 63 : June : Reduced billiards hall in Sapporo Sugai and Asahikawa Sugai Buildings and opened a karaoke studio. Subsequently expanded karaoke studios nationwide. |
| 1990-09 |
Heisei 2 : September : Acquired Marutake Sangyo Co., Ltd., which operated bowling alleys in Muroran City. |
| 1991-12 |
Heisei 3 : December : Expanded the game and bowling floors in Sapporo Sugai Building and reopened. Subsequently expanded game floor additions nationwide. |
| 1993-07 |
Heisei 5 : July : Opened the large amusement building Sugai Dinos in Shirakawa-ku, Sapporo. |
| 1994-09 |
Heisei 6 : September : Acquired all shares of Hokubou Service Co., Ltd., made it a subsidiary, and then absorbed it in January of the following year. |
| 1994-12 |
December : Opened Sugai Dinos Karaoke (25 rooms) with communication karaoke equipment and extensive dining facilities inside Sugai Dinos. Sequentially introduced communication karaoke equipment and dining facilities to existing karaoke venues. |
| 1994-12 |
Heisei 6 (1994) December: Opened Sugai Dinos Karaoke (25 rooms) within Sugai Dinos, featuring communication karaoke equipment and comprehensive food and beverage facilities. The communication karaoke equipment and food and beverage facilities were subsequently introduced into existing karaoke venues. |
| 1995-08 |
Heisei 7 : August : Demolished or renovated eight cinemas in Sapporo Sugai Building and opened a full-fledged cinema complex (seven multiplex cinemas) and a game venue, the first of its kind in the prefecture. |
| 1995-08 |
August: Opened a billiard hall within Sugai Dinos. With the popularity of billiards, new or expanded billiard halls were rapidly launched across the region. |
| 1995-08 |
Heisei 7 (1995) August: Opened a billiards hall within Sugai Dinos. Riding on the popularity of billiards, new or expanded billiards halls were rapidly launched across the region. |
| 1996-04 |
April, 1996: Introduced a corporate identity and changed the company name from Sugai Kōgyō Co., Ltd. to Sugai Entertainment Co., Ltd. |
| 1996-04 |
April: Opened Sugai Teine, a large-scale mixed amusement facility with a shopping center, in Teine-ku, Sapporo. |
| 1996-04 |
Heisei 8 (1996) April: Opened Sugai Teine, a large-scale mixed amusement facility with a shopping center, in Sapporo's Teine Ward. |
| 1996-09 |
September: Registered the company's shares as a listed stock with the Japan Securities Association. |
| 1996-09 |
Heisei 8 (1996) September: Registered shares as a listed stock with the Japan Securities Dealers Association. |
| 1996-12 |
December: Introduced 'Cosmic Bowling' for the first time in Hokkaido at the bowling alley inside the Sapporo Sugai Building. |
| 1996-12 |
Heisei 8 (1996) December: Introduced 'Cosmic Bowling' for the first time in Hokkaido at the bowling alley in Sapporo's Sukei Building. |
| 1997-03 |
March, 1997: Opened a three-screen mini cinema complex within Sugai Dinos. |
| 1997-07 |
July: Opened Sugai Kotoni, a mixed amusement facility similar to Sugai Teine, in Nishi-ku, Sapporo, with an 'Ice House' attached. |
| 1997-07 |
Heisei 9 (1997) July: Opened Sugai Kotoni, a mixed amusement facility of the same type as Sugai Teine, in Sapporo's Nishi Ward, featuring an 'Ice House' as well. |
| 1998-04 |
April, 1998: Opened Sugai Dinos Obihiro, almost the same size as Sugai Dinos, within Obihiro City Dream Town Shirakaba. |
| 1998-05 |
May: Opened a manga café within Sugai 24. |
| 1998-05 |
Heisei 10 (1998) May: Opened a manga café within Sugai 24. |
| 1999-11 |
November: Opened the 4-screen Cinema Complex Muroran Theater adjacent to Muroran Grand. |
| 1999-11 |
Heisei 11 (1999) November: Opened the Cinema Complex Muroran Theater (4 screens) adjacent to Muroran Grand. |
| 1999-12 |
December: Opened 'e-comics', a manga café with internet PCs, in the headquarters building. |
| 1999-12 |
Heisei 11 (1999) December: Opened 'e-comics', a manga café equipped with internet PCs, in the head office building. |
| 2000-05 |
May, 2000: Signed a business partnership (FC) agreement with GEOS Co., Ltd. (now GEOS Holdings Co., Ltd.), which operates rental and recycling businesses. |
| 2000-07 |
July: Opened GEOS Dinos and GEOS Compal stores within amusement facilities in Sapporo. |
| 2000-07 |
Heisei 12 (2000) July: Opened Geo Dinos and Geo Compal stores within amusement facilities in Sapporo. |
| 2003-05 |
May, 2003: Opened Sugai Dinos Asahikawa, a super-large amusement facility, in Asahikawa City. |
| 2004-12 |
December, 2004: Cancelled the listing registration with the Japan Securities Association and listed shares on the JASDAQ Securities Exchange. |
| 2005-04 |
April, 2005: Opened Sugai Dinos Tomakomai, a super-large mixed amusement facility, in Tomakomai City. |
| 2005-09 |
September, 2005: Through a TOB of the company's shares by GEOS Co., Ltd. (now GEOS Holdings Co., Ltd.), GEOS became the parent company. |
| 2006-05 |
May, 2006: Opened Dinos Norbesa, a large mixed amusement facility, in Sapporo. |
| 2009-07 |
July, 2009: Changed the company name from Sugai Entertainment Co., Ltd. to GEOS Dinos Co., Ltd. |
| 2009-10 |
October: Acquired the GAME and café businesses from GEOS Frontier Co., Ltd., a consolidated subsidiary of the parent company GEOS (now GEOS Holdings Co., Ltd.), and the fitness business from GEOS Fitness Co., Ltd. |
| 2009-10 |
Heisei 21 (2009) October: Acquired the GAME and café businesses from Geo Frontier, a consolidated subsidiary of parent company Geo (now Geo Holdings), and the fitness business from Geo Fitness. |
| 2014-01 |
Heisei 26 (2014), January: The parent company (controlling shareholder) transferred from Geo Holdings Inc. to Health Corporation of the Sato Securities Ambitious Market (now RIZAP Group Inc.) (stock code 2928). |
| 2014-07 |
Heisei 26 (2014) July: Changed the company name from Geo Dinos Co., Ltd. to SD Entertainment. |
| 2014-10 |
Heisei 26 (2014) October: Rebranded the fitness business as SD Fitness. |
| 2015-05 |
Heisei 27 (2015), May: Acquired shares of MCS2 Inc. and consolidated it and its subsidiaries as a subsidiary. |
| 2015-07 |
July: The company name changed from Geo Dinos Inc. to SD Entertainment. |
| 2015-07 |
Heisei 27 (2015) July: Acquired shares of For You Co., Ltd. and made it a consolidated subsidiary. |
| 2015-10 |
October: The fitness business rebranded to SD Fitness. |
| 2017-01 |
Closed in October 2016, and opened a new SD Fitness Tsuji Kata store on adjacent property. |
| 2017-01 |
Heisei 29 (2017) January: Closed the SD Fitness Tsu store in Tsu City, Mie Prefecture in October 2016, and opened a new SD Fitness Tsu Fujikata store on the adjacent site. |
| 2017-05 |
Closed a large arcade in May 2017, and opened a combined fitness and internet cafe—the first of its kind in the prefecture—in August 2017. |
| 2017-05 |
Heisei 29 (2017) October: Closed the large game hall at Dinos Sapporo Shiroishi in May 2017 for business conversion. Opened a new facility in August 2017 that combined the first Hokkaido fitness center and internet café. |
| 2018-09 |
Opened SD Fitness Forte Oogawara store within the large shopping mall FORTE in Oogawara Town, Chibata District, Miyagi Prefecture. |
| 2018-09 |
Heisei 30 (2018) September: Opened SD Fitness Forte Daikawara in the large shopping mall FORTE in Daikawara Town, Shibata District, Miyagi Prefecture. |
| 2018-12 |
Established Sugaidinos Inc. through a split-off, inheriting the entertainment business (cinema, bowling, games). Transferred all shares of Sugaidinos Inc., which operates the entertainment business, to Sugaidinos Holdings Inc. Sold the large mixed‑use amusement facility Dinos Sapporo Central Building, located at the headquarters. |
| 2018-12 |
Heisei 30 (2018) December: Established Sugai Dinos Co., Ltd. through a spin-off, inheriting the entertainment business (cinema, bowling, games). Transferred all shares of Sugai Dinos Co., Ltd., which operates the entertainment business, to Sugai Dinos Holdings Co., Ltd. |
| 2018-12 |
Heisei 30 (2018) December: Sold the Dinos Sapporo Chuo Building, the company's headquarters location. |
| 2019-04 |
Reiwa 1 (2019), April: Opened four company‑led daycare centers in Sapporo City. |
| 2019-04 |
Heisei 31 (2019) April: Opened company-led nurseries at four locations in Sapporo. |
| 2019-07 |
Reiwa 1 (2019), July: Moved headquarters to Dinos Sapporo White Stone Building in Sapporo City, Shiraishi Ward. |
| 2019-07 |
Reiwa 1 (2019) July: Moved headquarters to the Dinos Sapporo Shiroishi Building in Shiroishi-ku, Sapporo. |
| 2019-10 |
Reiwa 1 (2019), October: Added a 24‑hour fitness area to Dinos Cafe Tenroku store (Osaka City). |
| 2019-10 |
Reiwa 1 (2019) October: Added a 24-hour fitness area to the Dinos Cafe Tenroku store in Osaka. |
| 2020-06 |
Reiwa 2 (2020), June: Reopened SD Fitness Kogura Station Front store as SDF Kogura Station Front with a new concept. |
| 2020-06 |
June: Opened a new 24‑hour gym, SDF Hankyu Itami Station Front store, in Itami City, Hyogo Prefecture. |
| 2020-06 |
Reiwa 2 (2020) June: Renamed and reopened the SD Fitness Ogura Ekimae store as the new concept SDF Ogura Ekimae store (S.D.F = Self. Design. Fitness). |
| 2020-06 |
Reiwa 2 (2020) June: Opened a new 24-hour gym, the SDF Hankyu Itami Ekimae store, in Itami City, Hyogo Prefecture. |
| 2021-04 |
Reiwa 3 (2021), April: Opened Northern LABO. |
| 2021-04 |
Reiwa 3 (2021) April: Opened Northern LABO. |
| 2021-06 |
June: Opened the home care facility 'Gift Helper Station'. |
| 2021-06 |
Reiwa 3 (2021) June: Opened the home-visit care facility 'Gift Helper Station'. |
| 2022-01 |
January: Absorbed and merged with IT Next Inc., a consolidated subsidiary. |
| 2022-01 |
Reiwa 4 (2022) January: Absorbed and merged IT Next Co., Ltd., a consolidated subsidiary. |
| 2022-02 |
February: Sold the company's owned real estate building, Kitak24jo Building (Sapporo City, Kita Ward). |
| 2022-02 |
Reiwa 4 (2022) February: Sold the company's owned real estate building, Kitak24jo Building in Sapporo Kita-ku. |
| 2022-03 |
March: Sold the company's owned real estate building, Dinos Sapporo Shiraishi Building (Sapporo City, Shiraishi Ward). |
| 2022-03 |
Reiwa 4 (2022) March: Sold the company's owned real estate building, Dinos Sapporo Shiroishi Building in Sapporo Shiroishi-ku. |
| 2022-04 |
April: Moved from the JASDAQ (Standard) market to the Standard market due to a review of the Tokyo Stock Exchange's market classification. |
| 2022-04 |
Reiwa 4 (2022) April: Moved from the Tokyo Stock Exchange JASDAQ (Standard) to the Standard market following a review of market classifications. |
