Multiversal Wanderer: Starting in Naruto - Chapter 8: Establishing Authority

In the year 2030, Samsara Online, a 100% immersive VRMMORPG that allows players to bring their innate real-world skills to the virtual world, is launched and supported by the World Central Bank.

A former sporting rifle shooter genius transforms into the ‘Juvenile Butcher’. While originally supposed to have received the death penalty, he was instead fortunate enough to have entered a secret and highly regarded armed force, throwing himself into the ‘Nirvana Project’.

After a period of 10 years, he now has time to freely recover. Having trained until he had excellent military and martial skill, he sweeps through various military districts and returns back to his hometown. Under the monitoring of a beautiful female cop, he re-establishes his family’s bodyguard service, protecting beauties and moving unhindered, his achievements causing the fame of his outstanding, god-level bodyguard service to resound across the world!

- Description from Novelupdates

Jaxon Hawk pretty much lives inside, loving his own space, when BAM! He gets this crazy thing called the Sniper System just as the world goes totally bonkers with zombies. But these aren't your grandma's zombies, shuffling around and moaning. Nope, these guys are like Olympic athletes, running, jumping, climbing, basically doing everything to get you. And get this, they keep getting stronger and tougher each time they change! Every time you meet one, it's a fight for your life.The human race is on its last legs. The good thing is, everyone knows they have to work together or they're totally done for. This isn't a story about fighting other people, it's about not becoming zombie food. Regular folks don't have a shot, and even soldiers are sweating bullets. This is a hardcore survival story, where Jaxon has to use his new skills and think smart to keep himself, his family, and his new friends safe.It's a wild ride of thrills, trying to stay alive, and finding people he actually cares about. Oh, and there are some girls, too, making things even more interesting. It's all about big feelings, scary moments, and doing whatever it takes when every second could be your last.

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