At the password screen, press Press Left 4 times, Down 1 time and enter the Japanese character. Press Down 3 times, Right 3 times and enter the Japanese character. Press Left 8 times, Down 1 time and enter the Japanese character. Press Up 1 time, Right 8 times and enter the Japanese character. Press Right 4 times, Down 2 times and enter the Japanese character. Press Right 4 times and enter the Japanese character. Press Up 2 times, Left 2 times and enter the Japanese character. Press Up 3 times, Left 4 times and enter the Japanese character 2 times. Press Down 2 times, Left 1 time and enter the Japanese character. Press Up 3 times, Right 1 time and enter the Japanese character. Now hit End and you'll be taken to the soundtest.
At the password screen, press Down 2 times, Right 1 time and enter the Japanese character. Press Left 2 times, Down 2 times and enter the Japanese character. Press Left 5 times, Up 1 time and enter the Japanese character. Press Left 3 times and enter the Japanese character. Press Right 4 times, Up 2 times and enter the Japanese character. Press Left 7 times, Down 1 time and enter the Japanese character. Now hit End and you'll be able to select scenes.
At the password screen, press Right 3 times and enter the Japanese character. Press Right 2 times, Down 4 times and enter the Japanese character. Press Up 4 times, Right 1 time and enter the Japanese character. Press Left 6 times, Down 3 times and enter the Japanese character. Press Up 3 times, Right 1 time and enter the Japanese character. Now hit End and you'll be able to visit any room without having to bother with investigation or storyline.
At the password screen, press Right 3 times and enter the Japanese character. Press Right 6 times, Down 3 times and enter the Japanese character. Press Right 4 times, Up 3 times and enter the Japanese character. Press Down 3 times, Left 1 time and enter the Japanese character. Press Left 3 times and enter the Japanese character. Press Left 1 time, Down 1 time and enter the Japanese character. Press Left 2 times and enter the Japanese character. Press Up 4 times, Right 1 time and enter the Japanese character. Press Left 6 times, Down 3 times and enter the Japanese character. Press Up 3 times, Right 1 time and enter the Japanese character. Press Down 1 time, Right 6 times and enter the Japanese character. Now hit End and you'll get to watch the ending.