on day 8 of the January 2009 tournament alongside his close friend and former yokozuna Hiroshi Wajima. When Wajima died in December 2018, Demon sang a song he wrote at the funeral and was a pallbearer. On day 2 of the January 2011 tournament Demon caused some controversy when he opined publicly on NHK that Kotomitsuki Keiji, who was expelled by the JSA in July 2010 for gambling, should be reinstated. In April 2012, Demon's alma mater Waseda University appointed him a special counselor of their sumo club which was struggling to recruit new members. Other activities Demon hosted the weekly radio program on Mondays from 25:00 to 27:00 (technically Tuesday mornings) on National Radio Network from April 6, 1987 to May 14, 1990 as part of All Night Nippon. In 2008, Demon wrote, directed and acted in the short film . Demon voiced the character Zatan in the 2012 Kamen Rider × Kamen Rider Wizard & Fourze: Movie War Ultimatum film. He also wrote and performed its theme song, "Forest of Rocks". In 2017, Demon was selected by the Ministry of Internal Affairs and Communications to educate the public on and bring awareness to the harm of illegal radio waves. In February 2018, Demon took part in a symposium alongside singer Kaori Kishitani, athlete Dai Tamesue and the representative director of the Federation of Music Producers Japan speaking on the problem of ticket scalping. That year Demon provided the voice of the character Dr. Tetsuji Kanie in the anime adaptation of Hinomaru Sumo. In 2019, Demon was appointed an ambassador for good medical care by the Ministry of Health, Labour and Welfare. Demon leant his voice to Capcom's 2023 video game Street Fighter 6 as a real time commentator for fights. Persona Like the other members of Seikima-II, Demon adopted the stage persona of an Akuma ("demon") from the futuristic hyper-evolved dimension Makai ("demon world"), where he was the former Vice Emperor. They all wear face paint and elaborate stage outfits. The band preaches a demonic religion called Akumakyō through heavy metal music to conquer the Earth. Originally using the name , he began using in 2000, and in 2010 changed his name to Demon Kakka. He has also released material under the name and the symbol !, which is read as "Exclamation". On December 10, 2014, a supporter of politician Daisuke Sakamoto (Party for Japanese Kokoro) dressed as