I Can Accumulate Proficiency, Starting from Alchemy - Chapter 1002 - 417 The New Soul Slave Mastery of Yin

After Reincarnating into Naruto World at the Warring State Era as an Uzumaki, Masahiko thought that he got a useless System. He lived for 48 years as a normal, below average Uzumaki Shinobi.

That changed when he finally knew how the system works the day of his 49th Birthday!

- Description from Novelupdates

A once supreme celestial being is reborn in the world of mortals!With the ability to decide life and death in his left hand through his remarkable medical skills,And overwhelming supernatural powers in his right hand to crush everything!Unrivaled in both medicine and martial arts, he roams freely with arrogance!

【 Warning: Mature Content R-18 】Graves lived a content life, until he lost it all. After inheriting a hotel and immortality. As his final act, he sacrifices himself to save a woman's life.To his surprise, he reawakens to find the woman thanking him in an unorthodox way.His once normal life changes with this new power, and by comical chance, he throws himself into deadly situations to save women from bullets, blades, fire, planes, tanks, and trains.His new life is one of pain, except he always ends up on top.Join Graves on his comical struggle through the unnatural disasters he faces for the sake of his love life.

[Congratulations! You are the Pioneer of the Mutation Abyss. Brace yourself - The Apocalypse begins now…][Main Quest: Eliminate Fellow Survivors][Description: The strong will thrive, and the weak will perish]Theo was never lucky. Bullied for his appearance and always underestimated, he lived his life as a pushover. But everything changed the night a meteorite struck him. His life takes a drastic turn.Chosen by the Mutation Abyss, he gains access to a mysterious system, granting him an evolutionary advantage.The world is doomed. An infection is spreading, turning the world into a deadly battleground. As the human Infectees mutate and portals to unknown realms open, otherworldly forces threaten humanity’s survival.Theo must harness his new abilities to survive in this brutal world. But in a place where strength is everything, will Theo keep his humanity, or become something worse?