After My Master Lost His Memory, I Transmigrated into a Book

[Dual male leads + younger man/older man romance + obsessive, possessive villainous disciple vs. cool, gentle master]

In a nutshell: The master transmigrates into a novel again and embarks on a clingy journey of falling in love with, then trying to kill, his villainous disciple.

Also known as: The Story of How I Rekindled My Romance with My Villainous Disciple

Also known as: The Novel's Author Dragged Me In to Fill Out the Epilogue.

Shao Fu, a Chinese literature professor, transmigrates into his friend's novel, The Glass Emperor, as Yu Fujun. After reaching the ending and sealing away his villainous disciple, he returns to the modern world, losing all his memories of the past overnight.

A thousand years later, the seal on his villainous disciple is broken, and he meets Shao Fu again in the modern world. They discover that the truth about their past is far more complicated than they imagined.

The two return to the Cloud Continent and set out to find half of Emperor Yu Fu's soul, unravel the conspiracy, and uncover the truth.