Naruto: The Life Changer - Chapter 74 -:

Medieval times, warring knights, dragons, demons, gods, pirates, behemoths...Barbaric, ignorant, backward, numb, starvation widespread, people unable to make a living...Damn it! Punch to explode this era!!Reclaiming wilderness, farming, bridge building, road paving, coal mining, excavating minerals!Leveling up, recruiting apostles, forging an army!Barrage troops! Pushing horizontally!Quack! My steel torrent is invincible in this world!!Roman: “I am your destiny! Kneel before me!”So, you were supposed to farm, but somehow you ended up establishing a vast empire and becoming the emperor?

There is a saying that goes, a rabbit does not eat the grass by its own burrow.Doctor Jiang said seriously: “Nonsense, this is clearly the case of the pavilion closest to the water enjoying the moonlight first.”He is the young and promising psychologist Jiang Baizhou, skilled in understanding people's hearts, cold and noble. After marrying his childhood sweetheart Nie Cenjin, he was only enthusiastic about showing off their love.For several consecutive days, Cen Jin received strong complaints from relatives and friends about his 'shameful' behavior and finally couldn't bear it anymore: “Can't we just be a bit more low-key?”Doctor Jiang lazily lifted his eyelids and said, “No way, if they don't like it, they'll just have to hold it in.”Later, the always gentle and lovely Cen Jin declared she wanted a divorce, Doctor Jiang narrowed his eyes slightly: “Divorce?”Nie Cenjin pouted seriously and earnestly: “Yes, divorce.”Sitting on the sofa, Doctor Jiang hesitated for a moment, the depths of his eyes revealing a hint of laughter as he slowly got up, walked over, wrapped his arms around her waist, and gently caressed her increasingly round belly with his other hand: “Be good, we don't dream during the day.”【A sweet romance with mutual covert love, 1V1, are you lacking sweetness today?】

Crossing into the world of Naruto, and acquiring the One Piece system, with all the powers of the world of One Piece, swordsmanship, devil fruit, domineering.

-Do you think that your fire is very powerful? I have the burning fruit.

-Do you think that your thunder is very powerful? I have a thundering fruit.

-Do you think that your otter is very powerful? I have the frozen fruit.

-Did you said you want to die? Don’t worry, I also have a nickname: Death Doctor.

- Description from Novelupdates

Henry is a university graduate who happens to be working as a hotel receptionist, though with big dreams of being more than that. All these change for good one day when he finds a way of cracking a very sophisticated technological system, which ultimately empowers him to formulate and develop leading-edge inventions from his bedroom.With a determined mind not only to conquer the market but also to move out of his gray life, Henry starts into his journey of fame by introducing a number of radical technologies that capture the interest of the whole world and hold it.