Dynamite is one of the explosives in the game. It is encountered during the slicing of the fish, the third part of the game.
To slice the fish, the player drags his/her finger across the screen where the fish are at. When a stick of dynamite is sliced, the slicing mode will come to an end and the word "Boom" will appear. When the player hit the dynamite, he/she not only won’t earn money from the remaining fish caught, but you also lose out on any new fish you might have caught and did not yet slice. If you've purchased the Kusanagi no Dynamito Katana, you can cut through the dynamite, but you don't need this Katana, since it's not necessary. However, you don't get any gold after you've cut it. Catching any dragon will cause more dynamites in the game.