Wrestle-1 was a Japanese puroresu or professional wrestling promotion, founded in July 2013 by Keiji Mutoh following his resignation from All Japan Pro Wrestling (AJPW). The core of the promotion's roster was formed by wrestlers loyal to Mutoh, who left AJPW in a mass exodus during June 2013. Mutoh served as the promotion's first president and the head of its parent company, kabushiki gaisha named GEN Sports Entertainment. In March 2017, Kaz Hayashi took over as the new president of Wrestle-1. The promotion held its first event on September 8, 2013, at Tokyo Dome City Hall.

Shuji Kondo is a Japanese professional wrestler. Prior to becoming a pro wrestler, he played rugby. After starting his career in Toryumon, Kondo eventually joined All Japan Pro Wrestling (AJPW), where he became one of the promotion's top junior heavyweights, winning the World Junior Heavyweight Championship three times and the All Asia Tag Team Championship once. Upon leaving AJPW in 2013, Kondo joined Wrestle-1, where he became half of the inaugural Wrestle-1 Tag Team Champions. Kondo also worked as the vice president, booker and trainer for Wrestle-1 until its closure in 2020. He now works as a freelancer in promotions like Pro Wrestling Basara and DragonGate.