Japanese
CAUTION:
I'm really not good at English, so there can be wrong, impolite or childish expressions.
Run onekeysh.exe.
First of all, you push Z or X key to choose the language.
In case you want to change it again, delete language.txt.
You can use a GAMEPAD, too(except the Esc, Z and X keys). You use the BUTTON-1 instead of the space key.
■ TITLE

Space key: Start a game.
Arrow key(right or left): Choose music.
Arrow key(up or down): Turn up or down the volume of the songs(1-9).
■ GAME

SC: Your score.
HS: The highest score.
SH: Your shield.
Space key: The player character changes the direction and fires(until 2 shots on the screen)
Arrow key(up or down): Turn up or down the volume of the songs.
Always, appearing enemy team has 8 members. If you defeat an enemy, you'll score 100. In case you defeat all of 8, you'll get the BONUS SCORE(2,000).
By scoring every 50,000 or more, your shield is added 1. If you're attacked when the SH is "00", the game is over. The game-over-menu appears in a few seconds. By pushing Z and X keys, you return to the TITLE. By hitting the space key, you can play again.
By hitting the Esc key, you can take a break. If you want to continue the game, you hit the Esc key again. In case you push the Z and X key, You'll return to the TITLE.