Blacksmith and Hyper is a sub-quest in World 1 - Kanterbury Forest.
Quest Gameplay
In 1-5 Ancient Ruin Entrance, the player should continue walking along the main path until they see a Healing Altar. Four Living Armors are then seen running away from the Blacksmith, who claims that she'll make something "stronger". The player can then interact with her, who, despite claiming to be the best blacksmith in the land, has no clients. She then says that she needs a weapon to "enhance". The player must then follow the dirt road until it ends in a room filled with orcs. It would be wise for the player to kill all of the orcs in the room, to avoid having to fight them later on, but this is not required.
Whether the player decides to kill the orcs or not, there is a passageway to the north of where the orcs are, leading to a room with the Master Blade in a stone. Interact with the stone in order to pull the Master Blade out of the stone and use it. Four Living Armors will then attack the player. Once these are defeated, the player should leave the room, after which the Blacksmith jumps in, sees the Master Blade, and attempts to "upgrade" it, breaking the sword in the process.
Hyper then comes in, searching for the Master Blade. She asks the player and the Blacksmith about the whereabouts of the sword. When the player points out that the blacksmith destroyed the sword, Hyper replies that she needs the sword to save her kingdom from an evil pig (Referencing to Ganondorf), so the blacksmith gives Hyper a Laser Cannon. The Blacksmith then asks the player if they have more weapons to give to the Blacksmith for "upgrading", but the player replies that they have none, so the Blacksmith gives the player a Blacksmith Beeper so that the player can contact the Blacksmith anytime, allowing the player to enhance and upgrade their weapons and completing the quest.