You probably guessed it already that it's using Japanese characters but I think you don't need further instructions in English language as the images and pure guessing is sufficient enough for you to navigate the application.
The game will make use of your camera and by picking up a fishing rod and a selectable lure for the fish everything is set to enjoy the game. Tsuritama game is available for free in the appstore while upgrades of the rods and lures will cost you a dollar or so.
