Daiki Suda was a Japanese yakuza boss who was patriarch of the Suda-gumi subsidiary of the Omi Alliance during the 2010s. In 2019, he and the other Omi patriarchs participated in Kosei Shishido's rebellion against Chairman Masaru Watase when he announced the Omi's dissolution, but they were beaten down by Kazuma Kiryu in the courtyrard of Omi HQ and forced to accept the disbandment.