Re:Zero Kara Hajimeru Isekai Seikatsu - Bond of Ice: Prologue: Waste Heat Of The Beginning

This world is sick; both Immortals and mortals suffer from a stubborn ailment known as Longevity.Under the influence of Immortality, various Cultivation Techniques evolve rapidly in grotesque and inexplicable directions.[Fetal Period: A baby is born with shriveled, powerless limbs.][Childhood: After 20 years, the Internal Organs completely decay.][Weak Crown Period: At 50 years, the flesh dries and withers.][Thirty Years Old Stage: After 100 years, the blood runs dry and gives birth to mutations.]I am an Immortal Seeker, and also one seeking survival.

For the large sum of money to help her husband, she chose to be a surrogate mother covertly. Her sweetheart was out of trouble, but she became the woman of loose morals in his eyes. Misunderstanding, disappointment and sadness forced her to divorce the man she loved from the childhood.

When she was determined to start new life, another man burst into her life. “You are my baby’s mommy and you are my wife!” A big surprise hit her that her baby’s Daddy, the man she surrogated for, fell in love with her at his first sight.

His deep love convinced her to believe the affection of love again. Unexpectedly, her ex-husband returned to beg her recombination. One was her childhood sweetheart, and the other was the man who loved her and gave her hope for a new life……Facing the two men, what is her choice?
 

- Description from Novelupdates

After the nuclear warfare, massacres started to spread throughout the entire world. The order between humans completely collapses, and the strong eats while the weak gets eaten becomes the #1 rule.

[Ding!][Mission Unlocked: Eliminate the moles planted by Rose in the Reid Industries.]Reward: $10 billion in cash upon mission completion.~~~~Alex, a 18-year-old ordinary guy, finds himself inexplicably transmigrated into the plot of a Cheesy with no logic bashing novel.But his excitement quickly turns to dread when he realizes he hasn’t taken the role of the protagonist but the villain.To make matters worse, he’s destined to be the first stepping stone for the novel’s protagonist—the Plot armor son.Terrified of his impending doom, Alex thought of changing his strategy of even going as far as changing the whole story plot if he can survive in this braindead novel.And like some ROB or GOD answering his prayers for having fun on his decision, a mechanical voice spind in his mind and a blue transparent panel appeared in front of his eye.[Ding!][System Activated!]Detecting the host's desire to alter the original storyline.Activating [Villain System]…Alex’s relief is short-lived when he discovers the system’s peculiar goal:[Ding!][Mission Unlocked: Eliminate the moles planted by Rose in the Reid Industries.]Reward: $10 billion in cash upon mission completion.With his life on the line and a mission ahead, Alex embarks on his journey to survive the braindead Novel.Will he be able survive or fall victim to the Plot Armor son Aka Protagonist.Well that is for the future Alex to decide and know and you readers…