From Master Assassin to a Random Extra: OP in a Dating Sim - Chapter 15: Flashpoint

Shen Yuan, a normal human who was living his life peacefully on earth died mysteriously, only to get reincarnated into the world of cultivation with an unknown bloodline so powerful that it even surpassed his chest system....“Hmm, looks like becoming an alchemist might be good. System, purchase the Alchemy knowledge.”[Ding!][Congratulations Host, for acquiring Heaven Refining Alchemy Sutra.]...Follow to see the journey of how Shen Yuan creates the strongest harem since the Primordial times to journey the three thousand world.

Reborn in 2004, facing the age where pigs can be blown up, Lin Xuan, carrying the “Strongest Cottage King System”, started galloping…

- Description from novelbuddy

As the heir apparent of the Ye family, Ye Xuan went through fire and water for his family, but Ye Lang, who had just awakened his Divine Soul, usurped his place. In order to keep his position, Ye Xuan challenged Ye Lang to a Life-death Duel. With a broken Dantian, would he be able to win this fight?

Kim Hyun Woo lived the life of the wealthy thanks to his parents. But one day, he received a phone call informing him of a traffic accident which involved his parents. His father had died and his mother was hospitalized in critical condition. The normal life he once knew, collapsed…

They sold their house, cancelled various insurance plans, and moved to a one room apartment. And after a few years, Hyun Woo spends four to six hours tending to his mother and worked to pay for her medical bills.

One day, one of his Instructors recommended him for position in a company called Global Exos, who made an announcement of making history with the newest technological invention.