| March 1973 |
Founded. Opened the first restaurant in Kotoni, Sapporo |
| August 1975 |
Opened the first franchise restaurant |
| June 1976 |
Established Tsubohachi Co., Ltd. (Sapporo) |
| August 1978 |
Started our franchising chain business |
| April 1982 |
Established Tsubohachi Co., Ltd. Tokyo Headquarters |
| November 1984 |
Opened Osaka Logistics Center (current name: Kansai Logistics Center) |
| December 1984 |
Opened Kitasenju Logistics Center |
| September 1985 |
Merged with Tsubohachi Co., Ltd. Hokkaido Headquarters, making a nationwide network |
| April 1988 |
Changed our business name to Itouman Syokuhin Co., Ltd. |
| April 1991 |
Changed our business name to Itoman Syokuhin Co., Ltd. |
| April 1991 |
Established a training center and singles dormitory in Wako-shi, Saitama |
| October 1991 |
Opened the Nagoya Logistics Center (current name: Chubu Logistics Center) |
| April 1993 |
Changed our business name to Tsubohachi Co., Ltd. |
| August 1995 |
Opened Soka Logistics Center |
| April 1996 |
Opened Fukuoka Logistics Center |
| April 1998 |
Opened Sapporo Food Processing Center and started to distribute processed food |
| October 1999 |
Opened the first Rirakuza, a creative cuisine restaurant, in Akasaka, Tokyo |
| August 2001 |
Developed the suburban restaurant Rakusyoku Dining Tsubohachi |
| October 2001 |
Acquired an ISO14001 certificate at the Soka Logistics Center |
| May 2003 |
Marked our 30th anniversary. Held a special anniversary event at all Tsubohachi restaurants nationwide |
| September 2003 |
Established Tsubohachi Liquor Distribution Co., Ltd. |
| November 2003 |
Opened the first Dining Table Akanedoki in Funabashi, Chiba |
| February 2005 |
Akanedoki Chiba-Ginza-dori branch won the “Compact award” at the Denka Chubo (All-electric Restaurant Kitchen) Contest |
| February 2006 |
Established the Tsubohachi Group Code of Conduct |
| April 2006 |
Started to display the places of origin of foods and ingredients at all group restaurants |
| October 2006 |
Opened the first Shabu Shabu Hatcho in Nakano, Tokyo |
| February 2008 |
Opened Hanamaki Logistics Center |
| March 2009 |
Opened Sakana Matsuri in front of Kinshicho station |
| May 2009 |
Opened the first international franchised Tsubohachi restaurant in Singapore |
| June 2010 |
Opened Ito Kacho, the yakiniku (grilled meat) restaurant famous for its delicious horumon, in Yoyogi |
| January 2011 |
Opened the first Umaiya Shinpachi in the Itabashi Nakajuku shopping district |
| January 2012 |
Opened Kyushu Logistics Center (relocated from Fukuoka Logistics Center) |
| March 2012 |
Opened the first Pasta Studio Neo-Zipangu in Yokohama–Kannai |
| May 2012 |
Opened Sendai Logistics Center (relocated from Hanamaki Logistics Center) |
| December 2012 |
Opened the first international franchised Ito Kacho in Singapore |
| May 2013 |
Opened the Just Meat stone-grilled steak restaurant |
| August 2013 |
Concluded an area franchising agreement in Thailand with IMPACT Exhibition Management Co., Ltd. for all types of Tsubohachi businesses |
| October 2013 |
Opened Tsubohachi and Ito Kacho in Bangkok, Thailand |
| November 2013 |
Opened the Taisho-tei Thailand IMPACT branch |
| June 2014 |
Opened Rakushoku Tsubohachi Thailand BeeHive branch |
| June 2014 |
Opened Gyu-tan Sasagawa |
| November 2015 |
Opened the New York Steak Factory |
