[6] When it was founded, the Japan Innovation Party was led by Kenji Eda and Osaka city mayor Tōru Hashimoto.

[7] Soon after forming, however, Hashimoto resigned in December 2014 from his role in order to focus on the Osaka mayoral election scheduled for the spring of 2015, and Eda remained as the sole leader of the party.

[9] In October 2015 a faction aligned with Hashimoto split from the party to form the Initiatives from Osaka.

[10] Then, in late October, another four members left after expressing dissatisfaction with Matsuno's leadership; the group went on to form the Vision of Reform in December 2015.

[11] On 24 February 2016, the Japan Innovation Party, Vision of Reform and larger Democratic Party of Japan (DPJ) announced an agreement to merge ahead of the Upper House elections in July 2016.