| 1987 | Itoh & Matsuda was established. |
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| 1993 | Itoh & Matsuda changed its name to Tokyo City Law & Tax Partners. |
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| 1997 | Hirakawa, Sato & Kobayashi and Ohba & Ozaki were established, respectively. |
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| 1999 | Hirakawa, Sato & Kobayashi changed its name to Hirakawa, Sato, Kobayashi & Hirata. |
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| 2001 | Hirakawa, Sato, Kobayashi & Hirata changed its name to Yuwa Partners, and Ohba & Ozaki changed its name to Ohba, Ozaki & Shimasue. |
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| 2003 | City-Yuwa Partners was created by the merger of the Law Department of Tokyo City Law & Tax Partners and Yuwa Partners. |
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| 2005 | City-Yuwa Partners merged with Ohba, Ozaki & Shimasue. |
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| 2023 | Consolidation of Soga Law Office and City-Yuwa Partners. |
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