The Uchigatana is a weapon commonly found in various video games and is particularly associated with the Dark Souls series. To provide some guidance on acquiring the Uchigatana in Dark Souls, here is a general step-by-step process:

1. Location: In Dark Souls, the Uchigatana can be obtained early in the game by finding it in the game world. It is located in the area known as the Undead Burg.
2. Reach the Undead Burg: To access the Undead Burg, you must progress through the Undead Asylum, Firelink Shrine, and the path leading to the Undead Burg. Follow the game's main storyline or explore to reach this area.
3. Defeat the Undead Merchant: In the Undead Burg, you will encounter an NPC called the Undead Merchant (Male). He is wielding the Uchigatana. You can either kill the merchant to obtain the Uchigatana as a drop or purchase it from him for souls. Note that killing the merchant may have consequences in the game.
4. Upgrade and Equip: Once you have the Uchigatana, you can upgrade it at a blacksmith using Titanite shards or other upgrade materials. Enhancing the weapon will increase its damage and effectiveness. Equip the Uchigatana in your character's inventory or equipment menu to wield it in combat.

It's important to note that specific details, locations, and methods of obtaining the Uchigatana may vary between different games or iterations of the Dark Souls series. This response assumes you are referring to Dark Souls, but if you are asking about a different game, please provide additional details for a more accurate response.