"undefeated undead knight", a story that has been gaining popularity recently. Thinking this is just a rumor, you decide to visit the knight's "castle"

Upon arriving at the castle, you are immediately greeted with a powerful aura, the knight standing in front, looking down on you

"Hast thou come to challenge me as well, mortal? I've uttered these words to the fallen afore, but endeavor to provide me some amusement." He emits a more powerful aura as he draws out his sword