| 1969 |
Established in Yokohama City, Kanagawa Prefecture |
| 1969 |
Established in Shinjuku-ku, Tokyo |
| 1977 |
Established in Shinjuku, Tokyo |
| 1989 |
Established in Bunkyo, Tokyo |
| 1989 |
1989, established Sun Japan Co., Ltd. (SJI). Started software development business. |
| 1989-07-14 |
Established on July 14, 1989 |
| 2003-03 |
March 2003, registered stocks on the over-the-counter market with the Japan Securities Dealers Association. |
| 2003-03-04 |
March 4, 2003, listed on the over-the-counter market by the Japan Securities Dealers Association |
| 2004 |
Merged with Sun Japan Corporation |
| 2005 |
Inherit business rights from SJH Corporation and establish a new company |
| 2006 |
Established a new company, SJ Alpinu Corporation, which inherits all business from T.C.C. Corporation and I Beat Corporation |
| 2009-07 |
July 2009, merged domestic companies and changed the trade name to SJI Co., Ltd. |
| 2016 |
2016, announced fintech strategy, focusing on blockchain and cryptocurrencies. |
| 2017-02-01 |
February 1, changed trade name from SJI Corporation to Kaika Corporation |
| 2017-02 |
February 2017, changed trade name from SJI Co., Ltd. to KaiKa Co., Ltd. |
| 2018 |
2018, participated in financial business and made e-warrant group a subsidiary. |
| 2018 |
Made Fisco Digital Asset Group (now NEX Digital Group) an equity-method affiliate. |
| 2019 |
2019, transformed into an IT financial company. |
| 2020 |
Established CAICA Digital Partners Co., Ltd. to operate corporate support platform business. |
| 2020-03-01 |
March 1, Kaika Corporation transitioned to a holding company system and changed its trade name to CAICA Corporation |
| 2020-03-01 |
March 1st, KaiKa Co., Ltd. succeeded the information systems business through a company split (absorption-type split) to CAICA Technologies Co., Ltd. |
| 2020-03 |
March, KaiKa Co., Ltd. transitioned to a holding company system and changed trade name to CAICA. |
| 2020-03 |
In March, Caica Corporation was succeeded by Caica Technologies Inc. through a company split (absorption-type merger) in the information systems business |
| 2020-11 |
November, established CAICA Digital Partners Inc., which manages corporate support platform business, etc. |
| 2020-11 |
In 2020, further development as an IT financial company in November |
| 2020-12 |
December, invested in crypto assets and derivatives through the operation of the Crypto Asset Fund managed by EWC Anonymous Partnership, and invested in contemporary art through EWA Anonymous Partnership, and made them subsidiaries |
| 2021-02 |
February, strengthened capital and business alliance with Fisco Corporation |
| 2021-02 |
February, established CK Strategic Investment Business Limited Partnership, which invests in listed and unlisted stocks, bonds, etc. |
| 2021-03 |
March, acquired 40.7% of Zaif Holdings shares and became a consolidated subsidiary based on effective control. As a result, Zaif Holdings' subsidiaries, Zaif Corporation and Zaif Capital Corporation, also became our subsidiaries |
| 2021-03 |
March, transferred all shares of NEX Corporation, an equity-method affiliate |
| 2021-03 |
In March, acquired 40.72% of Zaif Holdings Co., Ltd. and became a consolidated subsidiary based on effective control standards |
| 2021-03 |
As a result, Zaif Holdings Co., Ltd.'s subsidiaries, Zaif Co., Ltd. and Zaif Capital Co., Ltd., were consolidated |
| 2021-08 |
August, held 83.76% of Zaif Holdings shares through share delivery |
| 2021-08 |
In August, additional shares of Zaif Holdings Co., Ltd. were acquired through share delivery, raising the investment ratio to 83.76% |
| 2021-11 |
November, established an intermediate holding company to oversee financial services business through company split |
| 2021-11-01 |
November 1st, changed trade name from CAICA Co., Ltd. |
| 2021-11 |
In November, changed the trade name from Caica to Caica Digital |
| 2021-11 |
In November, established Caica Financial Holdings Co., Ltd. as an intermediate holding company overseeing financial services business through a company split, unifying under the Caica (カイカ) brand |
| 2021-11 |
In November, the subsidiary e-Warrant Securities Co., Ltd. changed its trade name to Caica Securities Co., Ltd. |
| 2021-11 |
In November, the subsidiary Zaif Holdings Co., Ltd. changed its trade name to Caica Exchange Holdings Co., Ltd. |
| 2021-11 |
In November, the subsidiary Zaif Co., Ltd. changed its trade name to Caica Exchange Co., Ltd. |
| 2021-11 |
In November, the subsidiary Zaif Capital Co., Ltd. changed its trade name to Caica Capital Co., Ltd. |
| 2021-12 |
December, acquired all shares of Fisco Capital through our subsidiary Kaika Financial Holdings and made it a consolidated subsidiary. Changed trade name to Kaika Finance Corporation |
| 2021-12 |
In December 2021, through the subsidiary Caica Financial Holdings Co., Ltd., acquired all shares of Fisco Capital Co., Ltd., became a consolidated subsidiary, and changed the trade name to Caica Finance Co., Ltd. |
| 2022 |
Caica Financial Holdings Co., Ltd. started operating the NFT launchpad (primary sale) "Zaif INO" |
| 2022-07 |
July, dissolved |
| 2022-10 |
October, announced entry into Web3 business |
| 2022-11 |
In November 2022, entered the Web3 business |
| 2023-02 |
In February, transferred all shares of the subsidiary Caica Exchange Holdings Co., Ltd. (now NEX Digital Group Co., Ltd.) |
| 2023-02 |
EWM (HONG KONG) LIMITED liquidation completed |
| 2023-10 |
October, transferred all shares of Kaika Exchange Holdings (now ZED Holdings), our subsidiary, and as a result, made Kaika Exchange (now Zaif), and Kaika Capital (now Web3 Capital) non-consolidated subsidiaries |
| 2023-10 |
In October, the first-class financial instruments business and investment management business of the subsidiary Caica Securities Co., Ltd. were abolished |
| 2023-11 |
November, abolished Type 1 Financial Instruments Business and Investment Management Business of Kaika Securities, our subsidiary |
| 2023-11 |
In November, the subsidiary Caica Securities Co., Ltd. changed its trade name to EWJ Co., Ltd. |
| 2023-12 |
In December, our subsidiary KaiKa Securities Co., Ltd. changed its trade name to EWJ Co., Ltd. |
| 2023-12 |
In December 2023, withdrew from unprofitable businesses and became a lean organization |
| 2024-06 |
In June, the consolidated subsidiary CAICA Digital Partners Co., Ltd. was dissolved and liquidated in June 2024, and the liquidation was completed in September 2024. |
| 2024-06 |
In June, the consolidated subsidiary CK Strategic Investment Business Limited Partnership was dissolved and liquidated in June 2024, and the liquidation was completed in August 2024. |
| 2024-06 |
In June, the consolidated subsidiary EWARRANT INTERNATIONAL LTD. was dissolved and liquidated in June 2024, and liquidation procedures were initiated. |
| 2024-09 |
In September 2024, the subsidiary Caica Digital Partners Co., Ltd. liquidation completed |
| 2025-02 |
In February, the consolidated subsidiary KaiKa Finance Co., Ltd. was dissolved and liquidated in February 2025, and the liquidation was completed in May 2025. |
| 2025-02 |
In February, the capital and business alliance with Kusim Co., Ltd. was dissolved. |
| 2025-02 |
February: Dissolution of capital and business alliance with Kusim Corporation |
| 2025-03 |
March: Liquidation of EWARRANT INTERNATIONAL LTD. |
| 2025-05 |
May: Liquidation of the consolidated subsidiary Kaika Finance Co., Ltd. |
| 2025-10 |
In October, NEX Co., Ltd. became a wholly owned subsidiary through share exchange. |
| 2025-10 |
2025: Review of business structure and expansion of service solutions ratio October: Fully owned subsidiary of NEX Corporation through share exchange |
| 2025-10 |
The fiscal year ending October 2025 was a major turning point for our group. |
| 2025-10 |
In October 2025, NEX Corporation was made a subsidiary through M&A. |
| 2026-02 |
In February 2026, Shanko General Research Institute Co., Ltd. was made a subsidiary through M&A. |
| 2026-02-06 |
Shanko General Research Institute Co., Ltd. was made a consolidated subsidiary through share transfer on February 6, 2026, based on the board resolution on December 23, 2025, and the shareholders' meeting resolution on January 29, 2026. |
