Sword Soul: Demon Lair Rescue

Ethan lived relying on his younger sister Yara. He swallowed the Sword Soul Orb, became a disciple, and mastered the Blood Shadow Art. After leaving, he searched for Yara, only to find she had been imprisoned and tortured: demented during the day and bloodthirsty at night. Overwhelmed by rage, he founded the 'Blood Shadow Order' and massacred the Nether Sect. To save Yara, he used all his skill to trade for her life, lost all internal power, and his life and death are unknown.