Chapter 1 - Transmigraters sorrow

What if Shen Yuan didn't transmigrate into Shen QingQiu's body but his supposed to be deceased younger brother?

{Shen Yuan AU?}

Shen Yuan died from choking on a meat bun after becoming enraged from finally finishing a shitty novel online, yet he doesn't entirely die and instead goes into the body of the scumbag villains brother, who was apparently dead in the novel, so how could this have happened?