| 1989 | Joined Wakita Co., Ltd.
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| 1997 | Appointed as Representative Director and President of Something Co., Ltd.
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| 2000 | Appointed as Representative Director and President of Something Holdings Co., Ltd.
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| 2001 | Appointed as Representative Director and President of Something Re.Co.,Ltd.
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| 2009 | Appointed as Director of Geosign Co., Ltd.
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| 2016 | Appointed as Representative Director and President of GIR Co., Ltd.
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| 2017 | Appointed as Representative Director and President of Something Co., Ltd.
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| 2018 | Appointed as Representative Director and President and General Manager of Sales Headquarters of Something Co., Ltd. (current position)
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| 2019 | Appointed as Representative Director and Chairman of Something Co., Ltd. (current position)
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| 2019 | Appointed as Director of Geosign Co., Ltd.
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| 2020 | Appointed as Director and Chairman of Earth Prime Co., Ltd.
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| 2021 | Appointed as Chairman of Itloan Co., Ltd. (current position)
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| 2021 | Appointed as Representative Director and President of I-need Co., Ltd. (current position)
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| 2021 | Appointed as Director of Mirai Co., Ltd.
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| 2021 | Appointed as Director of Tokyo Application System Co., Ltd. (current position) |
| 2022 | Appointed as Director and Chairman of Tomei Co., Ltd. (current position)
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| 2022 | Appointed as Director of NXTech Co., Ltd. (current position)
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| 2022 | Appointed as Director of ITbook Technology Co., Ltd.
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| 2023 | Appointed as Director of IST Co., Ltd. (current position)
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| 2023 | Appointed as Director and Chairman of Creed Performance Co., Ltd. (current position)
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| 2023 | Appointed as Director and Chairman of Kiipl&nap Co., Ltd. (current position)
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