I Want to Live Forever so Much!

Reborn into a strange and bizarre world, Jiang Si opened his eyes. He first saw his beautiful female ghost sister, and then found that he had become a cat cub. So, Jiang Si, who has a cat body and a human heart, followed the female ghost sister, starting from learning the cultivation method of breathing out the essence of the moon, and led the cat mother cat sister and the whole family of cats together, starting from becoming a demon, and looking for immortality step by step.