After the Villain's Apprentice Knows the Plot

"Save the world one more time and I will be free!" Yunsu, the book-wearer, has just received the last mission in his career. He is going to serve as Li Chen's master in his youth in a fairy world book that will be destroyed by the villain Li Chen, and guide him on the right path. It is always easiest to straighten things out from a young age. Yunsu feels that this mission is very conscientious! He has to use the patience and love of caring for kindergarten children to complete this task! ——However, what Yunsu didn't know was that because of a bug in the system, Li Chen, who was originally the villain, also learned about the original plot... "If Master and I are going to part ways in the end no matter what, then let me turn those uneasy and obscure thoughts about Master that I remember day and night into reality." ↑Facing his disciple Li Chen, who was so stimulated by the plot of the original work that he was both yandere and numb, Yunsu had only one sentence in his mind: "Holy shit! Is this mission completed?" Li Chen smiled and kissed his forehead: "Master seems to have some secrets that I don't know about^^"