The Last Knife

I can travel through any world. I don't have any special combat power. I can only kill everything with a knife in my hand. Every time someone is killed, the sharpness and sturdiness of the knife will increase linearly. Every time I kill someone, my durability and combat effectiveness will skyrocket. The more I fight, the stronger I get, and the more I kill, the stronger I get. In the world of Naruto, Hidan has reached the pinnacle of the ninja world, and the entire Otsutsuki clan has reached the pinnacle of the world of Naruto. In the world of One Punch Man, Zombie Man becomes One-Punch Man, and Boros becomes the overlord of the universe. In the Marvel world, if you look at the trash like Deadpool, you are too embarrassed to brush it off, so just kill the world tree. Then he came to the fantasy sewer, Douluo Continent, and directly killed Douluo World. In the prehistoric times, he slashed the way of heaven in anger. … But when I came to Earth, I was suddenly locked by two super strong auras and told me not to mess around.