Why Has My Sword Master Turned Black?

After Xu Ren traveled to another world and became a black sword, he thought he would be silent for the rest of his life, but the sword master's accidental killing activated the exclusive sword spirit system. [Drink blood] can be tempered and upgraded, and you can add more points as you like. [Soul Seizing] can extract memories, and can also secretly learn combat techniques and spells. He originally wanted to use the power of the sword master to get rid of the sword spirit form and explore the truth about time travel, but the strange words and strange technologies that appeared one after another in the different world made him realize that this was no ordinary Western fantasy world!