[Transmigrate into a Book System] The Plot Isn’t Going by the Rules! What Do I Do?

Reborn, dark and scheming disciple x goofy, tsundere master who transmigrated

Shen Yunli figured he was probably the unluckiest person ever to transmigrate into a book as a master. On his very first day here, his darkened disciple slapped him to death. He thought that was the end of everything, but somehow he came back to life, and time had returned to the day he first arrived.

After dying several times, Shen Yunli finally understood: only by dying again and again could he change his fate as a disposable character. Even worse, he had to save not only his own life, but also that of his darkened disciple. Oh well. He was his disciple, after all. Besides, once you die enough times, you get used to it. But why has his disciple been looking at him more and more strangely lately?