DD Group Inc.

Established A & W Beauty Supply Ltd. in Higashiikebukuro, Toshima-ku, Tokyo

Establishment

Opened "VAMPIRE CAFE" in Ginza, Chuo-ku, Tokyo, and began restaurant operations

Converted from a limited company to a corporation, changed the company name to "Diamond Dining Inc." and moved the headquarters to Higashi-Ueno, Taito-ku, Tokyo

Change of organization from a limited company to a corporation and simultaneous name change to Diamond Dining Co., Ltd., with relocation of headquarters to Higashi‑Ueno, Taitō-ku, Tokyo

Moved the headquarters to Ginza, Chuo-ku, Tokyo

Moved the headquarters to Higashi-Shimbashi, Minato-ku, Tokyo

Listed shares on the Osaka Securities Exchange Nippon New Market – "Hercules" (now JASDAQ)

Made Sampler Inc. a subsidiary

Established Secret Table Inc. (100% owned subsidiary)

Established Golden Magic Inc. (now Diamond Dining Inc.) (100% owned subsidiary)

Established Tosa Company Middle (joint venture)

Made Yoshida Usaburo Shoten (now DD Plus Inc.) a subsidiary

Achieved 100 stores and 100 business types through a multi-concept (individual store) strategy

Moved the listing market classification from Hercules (Growth) to JASDAQ (Standard) (now Tokyo Stock Exchange Standard Market)

Fully acquired Bugus Inc. (now Diamond Dining Inc.) and started amusement business

Moved the headquarters to Nishi-Shimbashi, Minato-ku, Tokyo

Established Diamond Dining International Corporation in the United States (100% owned subsidiary)

Diamond Dining International Corporation acquired DreamDining Honolulu LLC (operating the Japanese restaurant "SHOKUDO" in Honolulu, Hawaii) as a subsidiary

Established Diamond Dining International California LLC in the United States (100% owned subsidiary)

Acquired and merged with Secret Table Inc. Divested the food and beverage division of Bugus Inc. and transferred it to Diamond Dining Inc.

Transferred seven Diamond Dining Inc. stores to Golden Magic Inc.

Renamed "Dream Dining Honolulu LLC" to "Shokudo Japanese LLC."

Relocated headquarters to Shiba, Minato-ku, Tokyo.

Fully acquired KOMARS F&B PTE.LTD. (Singapore) (now Diamond Dining Singapore Pte.Ltd).

Name change of Dream Dining Honolulu LLC to Shokudo Japanese LLC

Singapore subsidiary "Komars F&B Pte.Ltd." changed its name to "Diamond Dining Singapore Pte.Ltd."

Golden Magic Inc. (now Diamond Dining Inc.) acquired eight stores from Hagiwara Trading Co., Ltd. and Thanks Co., Ltd.

Changed market listing from JASDAQ (Standard) to the Second Section of the same exchange.

Change of listing from the JASDAQ Standard market to the Second Section of the same exchange

Diamond Dining International Corporation established Diamond Wedding LLC.

Acquired Hawaii Wedding business from KNG Corporation and made it a consolidated subsidiary.

Diamond Dining International Corporation established Diamond Wedding LLC. and acquired the Hawaii wedding business from KNG Corporation, making the latter a consolidated subsidiary

Diamond Dining Inc. (now Diamond Dining Inc.) acquired thirteen stores through fixed asset acquisition and asset transfer from Kansai Yoro Notoaki. Opened "Kyushu Netchuya Juu San LIVE" (Osaka City, Yodogawa-ku), the first store in Kansai.

Acquired 51% of shares of The Sailing Inc. (now Diamond Dining Inc.) and made it a consolidated subsidiary.

Hawaii Wedding "Cheers Wedding" began domestic orders.

Designated as a First Section (Prime Market) listing from the Second Section of the Tokyo Stock Exchange.

Diamond Dining Singapore Pte.Ltd. acquired 60.0% of issued shares of Diamond Dining Macau Limited and made it a consolidated subsidiary.

Invested in the One Dining Project.

Zettun Co., Ltd. became an equity-method affiliate.

Established a holding company for Diamond Dining Inc. (now Diamond Dining Inc.) with 100.0% investment to prepare for a split.

Zettun Co., Ltd. was converted from an equity-method affiliate to a consolidated subsidiary.

Commercial Arts Co., Ltd. became a fully owned subsidiary.

Transition to a holding company structure and simultaneous name change to DD Holdings Inc. (now DD Group Inc.)

SLD Inc. became an associate company under the equity method

Diamond Wedding LLC. established a joint venture in Japan, CHEER LLC (now MEA Inc.), with 100.0% investment

Established MEA Inc. and DD Holdings Venture Capital Inc. as 100% owned subsidiaries

SLD Inc. became a consolidated subsidiary

DD Holdings Venture Capital Inc. established the DD Holdings Open Innovation Fund LP

Announced acquisition of shares in Shonan Label Inc., stake acquisition in Sunny Side Inc., and acquisition of assets (preferred investment securities)

Diamond Dining Inc. was the surviving company in a consolidation, absorbing Golden Magic Inc., Shōgyō Geijutsu Inc., Sampur Inc., and The Sailing Inc.

Due to a third‑party allotment of shares by Zenton Inc., our ownership percentage decreased, leading to exclusion from consolidation and classification as an associate company (partial share sale in February 2022)

Transfer of all shares of Diamond Dining International Corporation, resulting in withdrawal from overseas food and beverage operations

Absorption merger of Diamond Dining Co., Ltd. as the surviving company and absorption merger of Bugus Co., Ltd.

Due to a third‑party allotment of additional shares by M.E.A. Co., Ltd., our ownership ratio decreased, leading to exclusion from the consolidated group and classification as an associate under the equity method

Name change to DD Group Co., Ltd.