The Call of Disorder

[No system + Cthulhu + no brainless fun + growth] An Yichen, who was suffering from a strange disease, traveled to a fantasy world after receiving a strange email. After experiencing a death game, he discovered that he had obtained... Tentacles? He just wanted to lie down and was forced to participate in various dangerous and strange events in order to save his life. Travel back and forth between the real world and the fantasy world, and reveal the truth about time travel step by step. Mainly composed of the world of immortality and fantasy, a chaotic and disorderly drama is performed in the real world. Who are the actors? Who is the director? Who is the audience? My name is An Yichen, this is my story... (The background of this book is modern, imaginary world, no mapping)