Unbridled Medical Expert Consort: Demon Prince, Be Good - Chapter 102B - Embarrassing, really embarrassing

Upon meeting the girl who would become her adopted younger sister, the duke’s daughter Christina regained memories of her previous life. Through those memories, she learned that her new sister, Mishuli, was the heroine of a certain story. And though the story depicted a Christina who abused her sister, the real Christina turned into a siscon who spoiled Mishuli to no end.

This is the 40,000th year of the Empire's dominance over the Galaxy. The glory of the Great Expedition has long been buried in the dust of history. Su Yu has transmigrated here, opening his eyes to the ruins of a planet in front of him, utterly bewildered.On this planet, there are war machines that stretch for thousands of kilometers, now broken to the extreme, alien beasts whose roars can shatter mountains and rivers, and radiation alien beasts whose mere movement causes further destruction to the surrounding environment—There is everything here, except hope.Whether willingly or not, Su Yu struggled to survive for three years and finally inevitably contracted radiation sickness, seemingly about to become one of the despairing.Until his Profession Panel, capable of infinite job transfers, finally activated.“Ding!”“Detected that the host has met the prerequisites; do you want to take the profession of [Mechanic]?”“Completing this job will allow you to gain profession experience through daily maintenance, recovery, and assembly of mechanical creations, leveling up the profession, and with each upgrade, you receive an enhancement amplification of your physical attributes...”Looking at the pile of broken gun parts in his repair room, an unprecedented light lit up in Su Yu's eyes!Years later, at the core of the Empire, at the highest point of the Terra world, Su Yu, the Mechanic from Ruins Star, Ghost Shadow Blade of Dead Silence Wilderness, Initiator of the Giant God Soldier Project's Restart, Governor of the Shattered Star Region, Master of Mechanical Ascension, Supreme Throne of the Forging World, looked at the torrent of steel gathering below and commanded with a wave of his hand![Our goal is to make the (second) (crossed out) Empire great again!]

Su Ran, a music prodigy, woke up transmigrated into a book.

At that point in time, the main story arc in the book had already been completed. As a villainess female supporting character, not only did she need to take over the original owner’s pitiful life in poverty, she also gained an instant son right at his rebellious period.

Ten or so more years from then, the son would turn into a twisted, evil villain. He would appear in one of the extra chapters to pick on the male and female lead’s children.

***

Su Ran: Son, you shouldn’t be too outstanding.
Su Han: Why not?
Su Ran: ’cause you will be killed.

Su Ran: Son, would you like to learn music from me and become a zen, little fairy boy who only needs to drink dew.
Su Han: No, I want to go into business so I can support you.

- Description from Novelupdates

What the heck? She, a famous doctor from the 23rd century, turned into a village peasant girl of a different world!