The Humble Backup No Longer Wants to Serve [Quick Transmigration]

'''Please check out and bookmark my upcoming column on scumbag gongs~ Chu Juan was bound to a cannon fodder system, tasked with being a devoted, uncomplaining backup love interest. He was the celestial prince who offered his horn for the sake of the divine lord, and the humble tutor who dedicated his life to helping the emperor secure his reign. In the end, the main couple found happiness together, while he tearfully blessed them before faking his death and leaving. Though it was frustrating, he completed his missions flawlessly. After finishing his tasks, Chu Juan let loose! He never wanted anything to do with the main characters again. Unexpectedly, the main characters, now happy, wer...