One Sword to the End of the World

He was originally a free and easy-going real person who became an immortal. In a great battle, he lost all his true energy, all his magic weapons were destroyed, his body was broken, his soul crossed the limit, and became a mortal. He studied under his master and returned to the path of immortality. Unexpectedly, his spiritual roots were weak. With his experience of becoming an immortal and his useless constitution, can he turn things around and return to the throne... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.