Naruto: The Outsider's Resolve - Chapter 3.1 (060):

Once in time, she became a peasant girl in Yuehe Village who had just been divorced. Her parents disappeared, leaving her with a five-year-old child. Little Baozi brother, grandma doesn’t care, grandpa doesn’t care, uncles and aunts are top-notch, cousins ​​make fun of them.

It doesn’t matter, we have space and the world in our hands. Let’s see her make a fortune with her little bun.

- Description from novelbuddy

Time travelling from the majestic era after the Recuperation of Reiki, he became Kimura Kazuki, a 16-year-old high school student in Japan, one year before the Reiki Recuperation.

Tentatively, he set out to hone himself to the bone, burning candles at both ends to stockpile resources in preparation for the imminent Recuperation of Reiki. His goal was to be many steps ahead of all humanity when the time comes.

However, it seemed like fate had decided to play a cruel trick on him.

One year later, the Recuperation of Reiki… did not happen as expected.

Opening his eyes after transmigrating, Chen Yi found himself kneeling in the Punishment Hall of the Marquis’s Manor. The reason? As a live-in son-in-law, he had actually dared to run away on his wedding day.Consequently, not only was he thoroughly despised by the entire manor, but he was also indefinitely grounded as punishment.However, Chen Yi was more than happy to enjoy the peace and quiet. Having exhausted himself with endless toil in his previous life, simply being a wealthy, idle son-in-law in this one sounded pretty damn good.From that day forward, relying on a Daily Intelligence System to passively harvest fortuitous encounters, he dedicated himself to mastering the zither, chess, calligraphy, painting, medicine, and even the Dao of fishing. He lived a supremely leisurely and blissful life within the manor.……Many years later, when the surrounding barbarian nations launched a massive invasion, Chen Yi—who had already reached the absolute pinnacle of perfection in the arts, medicine, and fishing—helplessly sighed. Stepping directly into the realm of a Land Immortal, he shocked the entire world with a single battle.Xiao Jinghong: “Husband, didn’t we agree you were just going to be an idle son-in-law? Why are you a Land Immortal?!”

I...AM...MOB CHARACTER!!!Sigh~My name is Samael, I was an office sla- I mean a worker who worked 9 to 5. It was a daily routine of monotony until one fateful day when I went home only to find my best friend with my girlfriend. Betrayal was the first thing I felt, followed by rage.And after taking ‘care’ of them, My surroundings changed…Looking at my reflection in a mirror, I noticed my appearance had changed. Gone was the face of the disgruntled office worker; instead, “SAMAEL ASHWOOD!!!” a character from a novel I used to read. But this wasn't just any character; I had become him—the sacrificial best friend of the protagonist who was betrayed and died in just the first two chapters.PROTAGONIST DIED!?[Heavenly Destiny System Initializing...][...]