At the password screen, enter the very first Japanese character. Down 2 times, Right 6 times and enter the Japanese character. Right 4 times, Up 2 times and enter the Japanese character. Left 6 times, Down 3 times and enter the Japanese character. Left 5 times, Up 3 times and enter the Japanese character. Left 4 times, Down 1 time and enter the Japanese character. Left 5 times and enter the Japanese character. Left 3 times, Down 1 time and enter the Japanese character. Up 2 times and enter the Japanese character.