Shota's Isekai NTR Adventure - Chapter 6 System?

The first time Yan Zhaoge crossed worlds, he landed in a martial warrior civilization that was at the peak of prosperity. He ended up in the book storage building of the the Divine Palace, which collected and preserved the classics of the entire world from all fields of knowledge. However, a world class calamity struck soon after and even the Divine Palace was destroyed.

Yan Zhaoge’s soul once again crossed over, but this time he arrived in the same world, except countless years have passed.

With his brain full of rare books and classics from the era of peak prosperity, Yan Zhaoge’s second crossing over to the present era was like a gamer who was used to playing hell mode suddenly finding himself playing the game on easy.

That was just way too awesome.

But before that, he needs to fix a certain problem.

“I’m not a main character? In fact, I’m actually the main character’s love rival and the antagonistic Mr. Perfect senior martial brother? This script is wrong!”

- Description from novelupdates

Lucas Voss was a normal adult in his late twenties.He doesn't know how or why but he got transmigrated as an extra inside of the novel he read till 5th volume.The problem for Lucas was that his life was in danger as soon as he entered the novel.Why?Because Lucas was transmigrated as the 4th Prince who is an extra and was about to die with an Illness that couldn't be cured.Not only that novel he transmigrated into was 'Cold-Blooded Emperor Rules.'The protagonist of that novel killed every member of the royal palace to become emperor of the empire.How will Lucas survive?Will he die like the extra that he is? or will he fight against fate to survive in this cold-blooded novel and become more than an extra?The only way to know is it read this novel!

Upon stepping onto the court, he had only one goal—to get the ball into the basket!

This novel is about the young master of the Du clan, Du Shaofu, who was born with crippled veins and is unable to cultivate martial arts . After finding out about his situation from the clan while returning home he got hit by a lightning and a mysterious ‘first scripture’ appears and after studying for ten years he was able to mend his crippled veins together and starts his journey to glory.