Sovereign of the Three Realms (WN) - Chapter 25: Legendary Realm of Training

Kaiden Tian’s aspirations of basketball stardom take a heartbreaking turn when a car accident not only claims his mother’s life but also robs him of his ability to walk. Undiscouraged, he settles for a role as the waterboy of a top high school basketball team, determined to stay close to the game he loves. However, he meets an untimely death and finds himself inhabiting the body of Kai Guo, a notorious troublemaker blessed with an ideal physical form. [Welcome to the Rise to Legend System!] With this second chance at life, Kaiden sees an opportunity to rewrite his destiny and fulfill the dreams that were once shattered.

I am Master Siwei, and I speak for arcane arts.
This is an era of heroes and heroines.
This is an era of great changes.
In the end, it will be an arcane era opened by me.

- Description from Novelupdates

This text has been published under the name “Amidst the Falling Stars”.“President, I've found a little Baozi who looks a lot like you.”“President, Baozi says he doesn't have a real dad; he's a test-tube baby!”“……”He'd only been gone for two days, only to be told by his secretary that he'd been high-grade counterfeited, and it was a mini version of him!Test-tube baby?Thud!One phone call, city-wide search for Baozi, and also Baozi's... mom...Half an hour later...“President, we've found Baozi's mom... it's just... the young assistant you just fired.”“……”Before meeting Ou Mucen, Ye Ning was both the inconspicuous adopted daughter of the Ou Family and the true hidden master of the Antique Circle. She was exceptionally talented and intelligent, content with living a simple life.But after meeting Ou Mucen, her persona collapsed...

mc gets transmigrated to Fallout New Vegas with the merchant system. let the questionable adventure begin.