I Am a Swordsman in a Western Fantasy World

Sean traveled to the Western Fantasy World, but he obtained the Immortal Cultivation System. From then on, there was an additional Immortal in this world. Others practiced Dou Qi and became professionals, while he was cultivating Immortals, while others practiced magic and became mage, and he was cultivating Immortals. Ding, you have obtained the Immortal and Ancestor System. The newbie's mission is to kill this demon chicken that has been reincarnated in three generations. Every feather of it is a treasure, and it can turn into evil flames of the underworld, burn the sky and destroy the world. But at this moment, it is reincarnating and going through tribulations. It has lost its mind, the demon feathers are dim, and the evil flames are gone. It is at its weakest moment, so please kill it. Reward: Immortal Skill "Eternal Sword Book" Sean fell into silence as he looked at this ordinary big hen being held in someone's hand.