| 10 | 45.00 | 2nd Kinki Open | C | 22-Jan to 23-Jan-2005 | |
| 16 | 300.00 | Friendship Cup/1st Asia Open | B | 12-Mar to 13-Mar-2005 | |
| 3 | 70.00 | 11th Kansai Open | C | 19-Mar to 20-Mar-2005 | |
| 8 | 85.00 | 8th Chu-Shikoku Open | C | 09-Apr to 10-Apr-2005 | |
| 1 | 45.00 | 1st Gifu Open | C | 07-May to 08-May-2005 | |
| 14 | 60.00 | 17th Japan National Championships | A | 14-Jun to 18-Jun-2005 | |
| 4 | 35.00 | 2nd Kyoto Open | C | 09-Jul to 10-Jul-2005 | |
| 1 | 70.00 | 2nd Kochi Open | C | 20-Aug to 21-Aug-2005 | $70 |
| 7 | 70.00 | Japan National Open | C | 24-Sep to 25-Sep-2005 | |
| 6 | 30.00 | 5th Chubu Open | C | 12-Nov to 13-Nov-2005 | |
| 4 | 127.50 | 6th Asia Championships | B | 26-Nov to 27-Nov-2005 | |
| 7 | 25.00 | Japan National Doubles Championship | XC | 10-Dec to 11-Dec-2005 | |
