Master of Monster Synthesis - Chapter 300 - 199: Disturbance at Dragon Island Mechanical City (Combined)

After self-sacrificing, Yuri transmigrates from an apocalyptic to an interstellar era, inhabiting a disabled girl's body. She enters a joint marriage with a similarly disabled SSS-tier alpha, gaining a share in an ore planet. Determined to help her husband regain leg function and reclaim his SSS-rank, their journey together unfolds.

“Shameless Xia Ping, not only did you steal my martial arts manual and medicinal pills, you even took my fiancée! We’re not finished!”

Ever since she transmigrated, she was blessed with an inbuilt anti-poison detector.

Beep beep – What? Her father’s concubine was evil and her half-sister was vicious?
Beep beep – Ah! She was in an arranged marriage and her husband did not love her?

Who cared? She could kill those evil creatures instantly with her high intelligence.

Her unparalleled beauty attracted countless suitors and her popularity topped the charts. No one was immune, even the emperors and princes were all captivated by her…

- Description from Novelupdates

After a shocking reincarnation, our hero opens her eyes to a new (and messy) world the last thing she remembers is reading Lady Viper’s Vow, a dark fantasy novel about a cruel, misunderstood villainess and her path of doom. But when our protagonist finds herself reborn right in the heart of an attack, she’s moments away from a second, way-too-soon death. Just as she’s about to face the end, a mysterious “system” pops up with a single mission: Level Up or Die Trying. It’s bossy, snarky, and her new best friend. As she levels up into a borderline-cheater powerhouse, she discovers her fate isn’t to be a hero, a princess, or even a sorceress, but to protect the one person no one ever expected her to side with: the villainess herself.