| 1991-12 |
Established New Urban Science Research Institute Inc. with a capital of 20 million yen, engaging in comprehensive consulting on land utilization in Nakagyo-ku, Kyoto. |
| 1991-12-11 |
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| 1991-12-11 |
Established as New Urban Science Research Institute Co., Ltd. in Kyoto with a capital of 20,000,000 yen. |
| 1995-11 |
Signed a primary agency contract with D.D.I. Kansai Pocket Phone Inc. (now SoftBank Corp.) to start mobile communication business. |
| 1995-11 |
Signed a primary agency contract with DDI Kansai Pocket Phone Co., Ltd. (now SoftBank Corporation) to start mobile communication business. |
| 1996-04 |
Signed a primary agency contract with NTT Kansai Mobile Communications Network Inc. (now NTT Docomo Inc.) to fully develop the mobile communication device business. |
| 1996-04 |
Established Interbel Inc., a mobile device sales company. |
| 1996-04 |
Signed a primary agency contract with NTT Kansai Mobile Communication Network Co., Ltd. (now NTT Docomo) to begin full-scale mobile device business. |
| 1996-04 |
Established Interbel Co., Ltd., a mobile device sales company. |
| 1996-05 |
Set up Docomo Shop Kawaramachi Marutamachi, the first Docomo Shop in Kamigyo-ku, Kyoto. |
| 1996-05 |
Opened its first Docomo shop, Kawaramachi Marutamachi store, in Kyoto. |
| 1996-08 |
Interbell Corporation concluded a primary agency contract with Kansai Cellular Telephone Co., Ltd. (now KDDI Corporation). |
| 1996-08 |
Interbel Co., Ltd. signed a primary agency contract with KDDI Corporation (formerly KDD Kansai Cellular Phone Co., Ltd.). |
| 1997-02 |
Opened a Tokyo branch in Shibuya, Tokyo, and expanded into the metropolitan area. |
| 1997-02 |
Opened Tokyo branch in Shibuya, Tokyo. |
| 1997-03 |
Changed the trade name to "Neppoku Japan Co., Ltd.". |
| 1997-03 |
Changed company name to Neptune Japan Co., Ltd. |
| 1998-07 |
Relocated the Tokyo branch to Sangenjaya, Setagaya-ku, Tokyo, and established a Docomo Shop Sangenjaya store. |
| 1998-07 |
Relocated Tokyo branch to Sangenjaya, Setagaya, Tokyo, and established Sangenjaya Docomo Shop. |
| 1999-02 |
Interbell Corporation concluded a primary agency contract with Japan Mobile Communications Co., Ltd. (now KDDI Corporation). |
| 1999-02 |
Interbel Co., Ltd. signed a primary agency contract with Japan Mobile Communications Co., Ltd. (now KDDI Corporation). |
| 1999-06 |
Interbell Corporation concluded a primary agency contract with Tokyo Digital Phone Co., Ltd. (now SoftBank Corporation). |
| 1999-06 |
Interbel Co., Ltd. signed a primary agency contract with Tokyo Digital Phone Co., Ltd. (now SoftBank Corporation). |
| 2000-01 |
Interbell Corporation concluded a primary agency contract with Tuka Cellular Tokyo Co., Ltd. (now KDDI Corporation). |
| 2000-01 |
Increased capital to 80,000 thousand yen. |
| 2000-01 |
Interbel Co., Ltd. signed a primary agency contract with TU-KA Cellular Tokyo (now KDDI Corporation). |
| 2000-01 |
Capital increased to 80,000,000 yen. |
| 2000-02 |
Increased capital to 320,000 thousand yen. |
| 2000-02 |
Capital increased to 320,000,000 yen. |
| 2000-03 |
Increased capital to 401,075 thousand yen. |
| 2000-03 |
Relocated headquarters to Chuo-ku, Tokyo. |
| 2000-03 |
Capital increased to 401,075,000 yen and moved headquarters to Chuo, Tokyo. |
| 2000-07 |
Interbell Corporation established Da Capi Isezaki Store as the first suburban-type combined sales store in Isesaki City, Gunma Prefecture, and began operations in Northern Kanto. |
| 2000-07 |
Established Da Capi Isezaki store in Gunma Prefecture, beginning sales in Northern Kanto. |
| 2000-08 |
Established Docomo Mall Meito Hachimae Store in Nagoya, Aichi Prefecture, and expanded into the Tokai region. |
| 2000-08 |
Opened Docomo Mall Meito Hachimae store in Nagoya, expanding into Tokai region. |
| 2002-10 |
Interbell Corporation concluded primary agency contracts with J-Phone Kansai Co., Ltd. (now SoftBank Corporation) and J-Phone East Japan Co., Ltd. (now SoftBank Corporation). |
| 2002-10 |
Interbel Co., Ltd. signed primary agency contracts with J-Phone Kansai Co., Ltd. and J-Phone East Japan Co., Ltd. (both now SoftBank). |
| 2004-04 |
Merged with Interbell Corporation. |
| 2004-04 |
Absorbed Interbel Co., Ltd. |
| 2004-12 |
Relocated headquarters to Yaesu, Chuo-ku, Tokyo. |
| 2004-12 |
Relocated headquarters to Yaesu, Chuo, Tokyo. |
| 2006-04 |
Listed the company's shares on the Jasdaq Securities Exchange. |
| 2006-04 |
Listed on JASDAQ Securities Exchange. |
| 2006-08 |
Relocated headquarters to Kyobashi, Chuo-ku, Tokyo. |
| 2006-08 |
Moved headquarters to Kyobashi, Chuo, Tokyo. |
| 2007-03 |
Established Neptune Service Co., Ltd., which aims to engage in personnel dispatching (later renamed Seeds Promotion Co., Ltd.). |
| 2007-03 |
Established Neptune Service (later Seeds Promotion) for staffing business. |
| 2010-03 |
Split off the mobile communication business department and established Carrier Free Co., Ltd. |
| 2010-03 |
Divided mobile communication sales division into a separate company, Carrier Free Co., Ltd. |
| 2010-04 |
Subsidiary Carrier Free Co., Ltd. acquires the business of 23 mobile phone retail stores from the Kōsō Communications Group. |
| 2010-04 |
Listed on the Osaka Securities Exchange (JASDAQ Market) following the merger of the Jasdaq Securities Exchange and the Osaka Securities Exchange. |
| 2010-04 |
Subsidiary Career-Free Corporation acquired 23 mobile stores from Hikari Communications Group. |
| 2010-04 |
Listed on Osaka Securities Exchange (JASDAQ market) following merger of Osaka and Tokyo exchanges. |
| 2010-10 |
Listed on the Osaka Securities Exchange JASDAQ (Standard) following the integration of the Osaka Securities Exchange Hercules Market, JASDAQ Market, and NEO Market. |
| 2010-10 |
Listed on Osaka Securities Exchange JASDAQ (Standard) after market integration. |
| 2011-09 |
Acquired 100% of the shares of Game Studio Co., Ltd. (formerly Mobile & Game Studio Co., Ltd.) and made it a consolidated subsidiary. |
| 2011-09 |
Acquired 100% of Game Studio Corporation (formerly Mobile & Game Studio Corporation). |
| 2013-07 |
Listed on the Tokyo Stock Exchange (JASDAQ Market) following the integration of the spot markets of the Osaka Securities Exchange and the Tokyo Stock Exchange. |
| 2013-07 |
Listed on Tokyo Stock Exchange (JASDAQ) after market integration of Osaka and Tokyo exchanges. |
| 2014-04 |
Transition to a holding company structure by establishing Nepu Mobile Kanto, Nepu Mobile Tokai, Nepu Mobile Kansai, and Nepu Create through a new company split method. |
| 2014-04 |
Established Neptune Mobile Kanto Corporation, Neptune Mobile Tokai Corporation, Neptune Mobile Kansai Corporation, and Neptune Create Corporation through new company setup. |
| 2014-12 |
Transfer all shares of Nepu Mobile Kanto, Nepu Mobile Tokai, and Nepu Mobile Kansai to Lanet Corporation. |
| 2014-12 |
Transferred all shares of Neptune Mobile Kanto, Neptune Mobile Tokai, and Neptune Mobile Kansai to Lanet Corporation. |
| 2015-01 |
PANACHE Staffing business was transferred from EP Consulting Service Inc. to Sees Promotion Inc. |
| 2015-01 |
Acquired PANACHE Staffing business from EP Consulting Service Corporation via transfer to Seeds Promotion Corporation. |
| 2015-03 |
Acquired 68.9% of Triaxis Corporation and made it a consolidated subsidiary. |
| 2015-03 |
Acquired 68.9% of Triaxis Corporation, making it a consolidated subsidiary. |
| 2015-09 |
Acquired 67.0% of Totech Corporation (now Delta Engineering Inc.) and made it a consolidated subsidiary. |
| 2015-09 |
Acquired 67.0% of Totech Corporation (now Delta Engineering Corporation), making it a consolidated subsidiary. |
| 2015-12 |
Relocated headquarters to Minato-ku, Tokyo. |
| 2015-12 |
Changed the company name to N.J. Holdings Co., Ltd. |
| 2015-12 |
Relocated headquarters to Minato, Tokyo. |
| 2015-12 |
Changed company name to NJ Holdings Corporation. |
| 2016-01 |
Acquired 51.3% of Shade Corporation and made it a consolidated subsidiary. |
| 2016-01 |
Acquired 51.3% of Shade Corporation, making it a consolidated subsidiary. |
| 2016-06 |
Merged Sees Promotion Inc. into Totech Corporation (now Delta Engineering Inc.) with Totech as the surviving company. |
| 2016-06 |
Merged Seeds Promotion into Totech Corporation (now Delta Engineering Corporation), with Totech as surviving company. |
| 2017-04 |
Merged Career Free Inc. into Nepu Create Inc. with Nepu Create as the surviving company. |
| 2017-04 |
Merged Career-Free Corporation into Nepro Create Corporation, with Nepro Create as surviving company. |
| 2017-05 |
Established Būmu Inc. (formerly Būmu-sha) as a sponsor candidate for Būmu Inc. |
| 2017-05 |
Established Boom Corporation (new company) as a sponsor candidate for Boom Corporation. |
| 2017-06 |
Supported business revitalization of Boom Co., Ltd. (formerly Boom Corporation), which was acquired by Boom Co., Ltd. (New Boom Corporation). |
| 2017-06 |
Transferred Boom Corporation's business to new Boom Corporation. |
| 2017-09 |
|
| 2017-09 |
Transferred all shares of Shade Co., Ltd. |
| 2017-09 |
Transferred all shares of Shade Corporation. |
| 2017-12 |
|
| 2017-12 |
Established WIT One Co., Ltd., which conducts customer support for game operations. |
| 2017-12 |
Established WIT One Corporation for game operation customer support business. |
| 2018-07 |
|
| 2018-07 |
Transferred 70.0% of the shares of Totech Co., Ltd. (now Delta Engineering Co., Ltd.) for capital and business alliance with DELTA Holdings Co., Ltd. |
| 2018-07 |
Transferred 70.0% of Totech Corporation (now Delta Engineering Corporation) to Delta Holdings Co., Ltd. for capital and business alliance. |
| 2018-10 |
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| 2018-10 |
Succeeded the game operation support business of ISAO Co., Ltd. through a spin-off to WIT One Co., Ltd. |
| 2018-10 |
Absorbed game operation support business of ISAO Co., Ltd. into WIT One Corporation via spin-off. |
| 2019-06 |
|
| 2019-06 |
Changed the fiscal year of the company and its consolidated subsidiaries from March to June. |
| 2019-06 |
Changed fiscal year end from March to June for the company and subsidiaries. |
| 2019-11 |
|
| 2019-11 |
Merged the three consolidated subsidiaries WIT One Co., Ltd., Boom Co., Ltd., and NJ One Co., Ltd. |
| 2019-11 |
Integrated management of WIT One Corporation, Boom Corporation, and N.J. One Corporation. |
| 2020-03 |
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| 2020-03 |
Established Okinawa base (WIT One Okinawa Co., Ltd.) at WIT One Co., Ltd. |
| 2020-03 |
Opened Okinawa branch of WIT One Corporation, WIT One Okinawa. |
| 2020-07 |
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| 2020-07 |
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| 2020-07 |
Established Tech Flag Co., Ltd. to strengthen technological cooperation and improve productivity within the group. |
| 2020-07 |
Established Tech Flag Corporation to strengthen technical collaboration and productivity. |
| 2022-04 |
Reclassified from the Standard Market of the Tokyo Stock Exchange to the Standard Market following a review of market segments. |
| 2023-07 |
Sold all shares of Delta Engineering Co., Ltd. |
