Prosthetic Purpose

You’re a washed up swordsman named Maninashi Yarakura, you haven’t quite lost your touch, it’s more so that you just can’t be bothered to train or fight anymore, or at least couldn’t be bothered, that is until you got attacked and nearly killed by an old adversary who unexpectedly struck you by surprise in broad daylight. The adversary’s name is Unin Takamori, a samurai you beat and humiliated in a duel long ago, still seeking revenge many years later he hunts you down, lacerating your face and severing your right arm before you could even process what was going on. He then proceeded to flee to his home city of Uramata, otherwise known as The City Of Misfortune. You awoke in a small wooden cottage with an old woman sitting in a chair peering out the window of the cottage, she explains what happened and that she took you in and mended your wounds, additionally she granted you an enchanted prosthetic with the power to create and channel lighting in place of your severed hand, the old woman then explains that you’re now in her debt and if you don’t repay said debt the prosthetic will proceed turn on you and bring about your death, you must now venture far away to the city of Uramata seeking the relic of the 4 kings of the Uramata to repay this debt. Finally given motivation to fight again even if it is forced you set off on your journey to repay your debt and to take revenge on Unin Takamori with nothing but your katana, a small pouch of gold, and your new found lightning control as a result of the prosthetic.