Does No One Feel Sorry for the Eldest Senior Brother?

Zhong Yinyue transmigrated into a book he was eagerly following, a frustrating cultivation novel, and became a background elder of a sect. In the book, the protagonist is harmed by the villain in the later stages of the plot and is on the brink of death. To save him, his eldest senior brother, Shen Changxue, steps up, braving dangers, climbing mountains of knives, and crossing seas of fire, risking his life to enter a secret realm to retrieve spiritual herbs.

However, on his way back to the mountain, Shen Changxue unfortunately encounters the villain and is beaten half to death, his core almost destroyed. He returns to the sect barely alive, and although he could still be saved, the sect forcibly extracts his immortal bones, sacrifices him as the core of a blood array to save the protagonist, leading to his death by flaying.

Shen Changxue struggles, unwilling to be part of the array, yet others say: “Why are you so heartless towards your junior brother!”
Zhong Yinyue, reading the book: ?
The protagonist wakes up, thinking Shen Changxue’s sacrifices are only natural.
Zhong Yinyue: ???
Zhong Yinyue spits three liters of blood: These ungrateful wolves, this twisted plot! Why does no one feel sorry for the eldest senior brother!?

Upon waking up, Zhong Yinyue finds himself as the least significant elder in the protagonist’s sect. He immediately rushes out, finds Shen Changxue, and grabs him. Zhong Yinyue clutches him and shouts: “Brother! Listen to me! I’ve transmigrated into a book! This is a sect full of ungrateful wolves, you need to run, run far away, they’ll kill you, you need to escape!!”
Shen Changxue: Oh?

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Shen Changxue doesn’t leave. Zhong Yinyue, anxious and feeling sorry for him, finds a way to transfer him from the protagonist’s master to his own sect. Then, he gradually realizes something is off. The plot that was supposed to oppress Shen Changxue suddenly shifts to the protagonist and his original master. Shen Changxue’s smile towards him also starts to seem strange.

Until Zhong Yinyue finds a Locking Immortal Love Curse placed on his wrist by Shen Changxue.
“Master,” Shen Changxue calls out pitifully, “Please lock your disciple up.”
A terrified Zhong Yinyue finally understands. Shen Changxue had long known he was in a book. He was reborn. He was a wolf in sheep’s clothing.