Use the barrier fairly well to reflect enemies' bullets and destroy them. 
The more enemies you destroy, the more scores you'll get! 

― rule ― 
・When you move rightward or get items that will be in the ways, basic scores will be added, and when you destroy enemies, you can get bourns scores. 
・You can use barrier to reflect enemies bullets. 
・You can destroy enemies with reflected bullets that you do. 
・When you take items, the time gauge will be recovered. (Amount of the time gage recovered varies depending on items.) 
・The power of your bullet will become strong throughout three steps. The bullet will get bigger step by step, and the last one will ignore enemies even though it hit enemies. 
・When you hit enemies and its bullets, your time gauge will be less. 
・When the time gauge is gone, the game is over. 
・in the story mode, you can play just one stage. (The bosses will appear when you reach the last part of each stages.) 
・In the endless mode, you can go to stages in a row till your game is over. You can register your score when your game is end.