Operate with the mouse.
Click the cursor to match the mark on the left side of the banner, and you will jump to the homepage.
Click on the logo on the right side of the banner, the game will start.
During the game, your character will follow the mouse and move.
While you are holding down the mouse button it charges the jumping power, and jumps when you release the button.

You can destroy the enemies by piercing at the tip of your character.
Every time you kill an enemy in the air, the number in the upper left is decremented by one. When the number becomes 0, you clear a stage.