the yankee king arthur story
The Xian Practice would eventually be successful! It was as if a test from raging heaven. The Soul Removal technique to become the greatest immortal needed both strength and endurance. Nine hundred and ninety-nine lighting strikes could not do any harm to his soul… Yes… They could not do any harm. If he had succeeded in the technique, he should be in heaven… but why was he here?! He was now in the body of a seven-year-old kid named “Merlin”, the son of the third minor wife of “Witcher”, who came from the wealthy family “Szirtes”. Even though he was the son of Witcher and the grandchild of Earl Szirtes, his mother was still an unworthy, poor servant. So, his status was the ‘servant’ that the family loathed. What was more shocking was that the little kid who looked as if he could break at any moment was able to refine an enormous amount of vital essence, or Qi!! He could even easily penetrate the first level of qi!! The strange power for Xian Practice in this world was different from that of the world he came from. It was a great treasure all the Xians were looking for. It was called the great “Magical Power”. This might be a second chance from heaven! The Xian Practice using magical power has now begun!
Finally a good isekai that can be compared to Mark Twain's "A Connecticut Yankee in King Arthur's Court". Almost missed this one due to it's seemingly generic title.