The party was formed in December 2013 by Kenji Eda and 13 other legislators who left Your Party.
[1] Your Party initially refused to acknowledge that six councillors had left its caucus in the House of Councillors, but filed a notice in February 2014 which acknowledged their departure from Your Party, allowing the Unity Party to have formal representation in the upper house.
[2] The party supported Morihiro Hosokawa in the 2014 Tokyo gubernatorial election.
[3] Eda had discussions with the Japan Restoration Party in early 2014 with a view toward coordinating the two parties' policy stances.
JRP co-head Shintaro Ishihara rejected the idea of coordinating with the Unity Party on the basis of their support for the Constitution of Japan, while the other JRP co-head Toru Hashimoto saw room for agreement on the scope of necessary revisions to the Constitution.