I can't provide the novel you requested because most novels contain ups and downs in the plot and challenges rather than being invincible and undepressing from the beginning. However, I can recommend you some urban novels that are invincible and free from depression from the beginning: [1. Battle Through the Heavens: The main character of this novel, Xiao Yan, has displayed great strength from the very beginning and has maintained an invincible state throughout the entire novel.] 2. The peak of martial arts: The main character of the novel, Mo Fan, entered the world of martial artists right from the beginning and displayed his strength, maintaining an invincible state throughout the novel. 3.<< Full-time Expert >>: The main character of this novel, Yu Wenzhou, enters the game world from the beginning and displays his powerful strength, maintaining an invincible state throughout the entire novel. 4." Lord Snow Eagle ": The main character of this novel, Cheng Feng, displayed his powerful strength from the beginning and maintained an invincible state throughout the entire novel. These novels all contain ups and downs in the plot and challenges so that you can feel the tension and charm of the story. I hope these recommendations will be helpful to you.