My Gu Can Cultivate on Their Own - Chapter 36

Thrown into a brutal world of swords and sorcery, his memories stolen by an unseen force, Magnus wanted only one thing: to go home.But every kingdom, devil, and god — along with regressors, possessors, and fellow reincarnators — seeks to carve him apart.Survival demands war. War demands survival.And with a System that hides more than it reveals, Magnus is dragged down a bloodstained path... one battle, one betrayal, one broken world at a time.

Crossing to One Piece world, he became Roger’s younger brother.

Unexpectedly, Gol-D-Roger who was in his fifties had a teenage brother. But he was so weak.

Fortunately, at the age of sixteen, he actually found himself with a possession soul system.

He had attached to the master IP man, also to the White Phoenix and to Ge Nie with his strong ability of the Hundred Step Flying Sword.

If you think that he can only Purchase these? Then you’re wrong!

Pain, Itachi, Ichigo Kurosaki, as long as there is money, any soul can be Purchased.

- Description from Novelupdates

Xia Yuqing is a shut-in+fujoshi from the 21st century. After an accident, she transmigrates into the body of a young princess forced into a political marriage to another country.

An inexplicable danger lurks within the harbor, where numerous containers emit a pungent stench. Suddenly, crew members fell ill and began to wildly attack other people. The text that appeared out of thin air told her that this was a survival game.

Fu Anan thought that it was just a dream, and that she wouldn’t be affected by it once she woke up.

It wasn’t until the game told her: She would die if she didn’t follow the rules of the game. She would also die if she didn’t survive for at least thirty days in the game…

Unknown danger on the cruise ship; An isolated island that suffocates people; creatures inside the fog; Floods that engulf everything; Epidemic with no cure; Constantly collapsing lands……

How should one survive in various natural and man-made disasters, and in environments where resources are scarce?

- Description from Novelupdates