Akinari Otsuka (born 1979) was a Japanese yakuza who was affiliated with the Nishikiyama-gumi subsidiary of the Tojo-kai during the 2000s. In 2009, he was sent to protect his boss Tsuyoshi Kanda as Kanda fornicated at the Red Brick love hotel, and he and his fellow bodyguards were beaten down by Kazuma Kiryu, who came to the love hotel to interrogate Kanda.