System + Space + Transmigrate into a Book
Su Yunwan unexpectedly transmigrates into the book Cloudfall at Dusk, becoming a supporting female character. She grew up alongside the heroine, and the two are as close as sisters. Though she is a supporting character, she is fortunate enough to be among the many disciples. Her aptitude is average, but thanks to a good opportunity and a bit of luck, she becomes a disciple of the Celestial Clan in the selection trials held between the Celestial and Spirit Clans six months later. After years of cultivation, her progress remains slow. The heroine, whose cultivation aptitude is exceptional, is chosen as an inner disciple of the Spirit Clan and becomes the fiancee of Mu Chen, the Spirit Clan's young lord. This leads someone who secretly loves Mu Chen to target the heroine, eventually colluding with the Demon Clan to start a war. The original host, whose cultivation is weak, is taken hostage. The heroine is gravely injured while saving her, and falls into a coma. The male lead tries everything, but to no avail...
System: Welcome, Host, to the System. Please change the male and female leads' ending in accordance with the plot.
Su Yunwan: Since I have to change the original ending, why not quietly cultivate and build my career so I can turn my life around? And I can enjoy the male and female leads' romance while I'm at it, haha. Their pairing is number one on my ship list in this book, after all.
The original host already had some good opportunities, and this time Su Yunwan works hard at cultivation. Six months later, she finally earns the chance to join the Celestial Clan as a disciple. As time passes, her cultivation improves by leaps and bounds. She turns her life around and changes the ending while shipping the male and female leads. But why does it seem like they're shipping her with someone instead? And why has she suddenly got an officially assigned love interest of her own...
Seven years later, the Demon Clan invades... Wait, that's not right. Why is it five years early?
I feel like the relationship line is very strange, and I started to like it for no reason.