Gone in a Sword Dust

I mistakenly entered another world, I thought I could have a stable life, but my father in the other world was a traitor to the demon sect. He wanted to escape from seclusion. Many years later, the enemy came, and the peaceful days were broken. Relatives were killed. Only the long sword in my hand can cut off the pain of loss. Only this sword can suppress the evil spirits in this world and bring peace to the world. If there is no one in this world to hold the sail, I will be the one to break the waves ahead.