You Came to Break Off My Sister's Engagement? I'll Wipe Out Your Entire Clan with One Sword

Mu Chen's soul was trapped in a secret realm for three thousand years, where he spent all that time cultivating his sword. When he returned, he found that only three years had passed in the outside world. During that time, his parents and little sister had been repeatedly bullied, and his sister Mu Xixi's fiancé had even come to their door to break off the engagement and humiliate her. Furious, Mu Chen drew the sword he had cultivated for three thousand years. Today, anyone who dares bully his sister will be slaughtered!