MTL - I Copy Under One Punch - ~ Copy Summary Nine (One Piece)

Luo Yi, a high school dropout in his original world, was isekai’d into the world of the Witcher 3. Starting out as a weak boy named Roy in the village of Kaer, Lower Posada, he was determined to grow stronger, no matter what it took. The first step toward becoming a legend was to kill. And his first kill was… a rooster. ‘You gain 1 EXP.’ Of course, Roy had his own cheat system like all the other isekai protagonists. His first step to becoming a legend started now…

A never-before-seen event has occurred in Ancheng! What happened? The Crown Prince of Di Jue unexpectedly has a son! Mo Chuxi is baffled—he’s still unmarried! Where did this son come from? Having a son is one thing, but what’s this? There’s also a daughter!Inside the narrow car cabin, Mo Chuxi blocks the woman, “Lady Yan, can you please explain what’s going on? Hmm?”“...”One morning, Little Baozi is holding Big Baozi’s hand, blinking his innocent watery eyes as he looks at Mo Chuxi.

Jian Chen, the publicly recognized number one expert of the Jianghu. His skill with the sword went beyond perfection and was undefeatable in battle, After a battle with the exceptional expert Dugu Qiubai who had gone missing over a hundred years ago, Jian Chen succumbed to his injuries and died.

After death, Jian Chen’s spirit was transmigrated into a completely foreign world. Following an extremely fast growth, his enemies piled up one after another before becoming gravely injured once more.

On the gates of death, his spirit had mutated, and from that moment henceforth, he would tread on a completely different path of the art of the sword to become the sword god of his generation.

- Description from novelupdates