Akira Aki was a Japanese yakuza who was affiliated with the Omi Alliance's Watase-gumi subsidiary during the 2010s. In 2019, he and several other Omi rank-and-file participated in Kosei Shishido and Homare Nishitani III's attempted assassination of Masaru Watase, Yuki Tsuruno, and Kazuma Kiryu at an Osaka construction site, only for the three men to fight off their attackers.