What is the drop rate of Kraken katana?

Could you please elaborate on the specifics of the "Kraken katana" and its drop rate? Is it a rare item found in a particular game or virtual environment? Is the drop rate referring to the probability of acquiring this katana through in-game mechanics or other means? Additionally, is there any known method to increase the chances of obtaining the Kraken katana, or is it purely based on chance? Understanding these details will help me provide a more accurate response to your question.