| March 1991 |
Kuniharu Koushima founded Hopeful Film in kobe. |
| July 1996 |
Developed Prosper Dot System(Patented). |
| May 1998 |
Establishment ONE by ONE Co., Ltd. in Osaka. |
| July 2001 |
Built head office in Higashi-Osaka. |
| March 2002 |
Subsidized by the Small and Medium Enterprise Agency, on account of Prosper Sliding System. |
| April 2002 |
Established Imagome Technical Center ( I.T.C. ) in Higashi-Osaka near head office |
| March 2003 |
Installed Prosper Sliding System to Mori Building Roppongi Hills Residence. |
| August 2003 |
Awarded the Inamori Excellent Manager Award of Seiwajuku. |
| October 2004 |
Exhibited in "Kansai Fair in Milan 2004" in Milan, Italy. |
| November 2004 |
Opened Tokyo Office in Akasaka, Minato-ku, Tokyo |
| Februaly 2005 |
Exhibited in EuroShop 2005 in Dusseldorf, Germany. |
| May 2006 |
Exhibited in ICFF 2006 in New York. |
| October 2006 |
Exhibited in ICFF 2006 in Cologne, Germany. |
| May 2007 |
Exhibited in ICFF 2007 in New York. |
| April 2008 |
Exhibited in MILANO SALONE 2008 as cooperator for Curiosity in Milan, Italy. |
| May 2008 |
Exhibited in ICFF 2008 in New York. |
| August 2009 |
Installed Prosper AL Line System to Nissan Motor Global Headquarters Gallery in Yokohama. |
| April 2013 |
Installed aluminum louver sign and automatic door using Prosper Screw Force Engine to Emporio Armani Omotesando, Tokyo. |
| October 2013 |
Installed Prosper Celling System and EL Line System to Shibuya Seibu, Tokyo. |
| May 2014 |
Installed Prosper Sliding System to Mori Buillding Toranomon Hills Residence,Tokyo. |
| September 2014 |
Installed Prosper EL Ceiling System to COMPOLUX in Seibu Shibuya,Tokyo. |
| February 2015 |
Developed and installed Prosper V Line System and Prosper EL-V Line System to Gucci Daimaru Shinsaibashi, Osaka. |
| May 2015 |
Released Prosper V Line System, Prosper EL-V Line System and LED Free Angle Line Light. |
