As Sukuna in Invincible - Chapter 69: No...

Hao Yan Che is an immortal and Yuan Gun Gun is a mortal.

《Journey to the West》only told the story about the journey to the west. But is it really that simple? Now, I’m telling you, the journey was just a beginning, and the story has not ended. Tang Sanzang, Sun Wukong, Zhu Wuneng, Sha Wujing, Little White Dragon. The road of these five will continue to go on. When I kneeled before Buddha and, in an instant, removed the Golden Hoop, I finally remembered who I truly am. Who am I? I am the Great Sage Equalling Heaven, Sun Wukong. I am the Great Demon Sun Wukong of the Demon Clan. I am, the invincible... Sun Wu Kong

This is a story of an ordinary boy gaining unusual powers from his nightmares… It all started when Lin Sheng experienced something strange on what he thought was just another normal day. He begins to have recurring dreams that lead him on an incredible journey of discovery as he encounters spine-chilling monsters and elusive secrets.

- Description from Novelupdates

Zheng Tan somehow returns to the year 2003, turning into a black cat. Picked up from a rubbish heap by the Jiao family, he is given the name “Charcoal”, and so begins the life inside Professor Jiao’s family. Zheng Tan remembers that he was once a person, but currently his body is that of a cat. He has no way of speaking the human language, but can understand it, and even retains the thinking and IQ of a young 20 year old youth. Read along as he adapts to this new world, and somehow tumbles from a group brawl to catching a thief.

- Description from Novelupdates