| Company | Timeline | Status | |
| Ramen Don Limited Director • Caterer | 6 Sep 2018←7 Years→Current | Active | |
| Lotus Karaoke Limited Director • Caterer | 11 Apr 2011←14 Years→Current | Active | |
Jam And Cheese Limited Director • Caterer | 6 Apr 2004←9 Years→1 Apr 2014 | Dissolved | |
| K Box Limited Director • Unreported | 26 Nov 2002←23 Years→Current | Active | |
| Karaoke Box Limited Director • Unreported | 1 Mar 1996←29 Years→Current | Active | |
| Moriyama & Co Limited Director • Unreported | 30 Oct 1995←30 Years→Current | Active | |
| Jujiro Limited Director • Caterer | 2 Jan 1987←38 Years→Current | Active | |
