MTL - Every World Seems Not Quite Right (Quick Transmigration) - Chapter 8 Urban black text 7

Wang Bin unexpectedly gained the ability to travel between the post-apocalyptic world and the real world. In the apocalypse, he organized a powerful team and continuously transported gold back to the real world.Using the gold from the apocalypse, Wang Bin built a commercial empire in the real world, eventually becoming the wealthiest person on Earth. His every word and action could influence the rise and fall of entire nations.At the same time, his development in the apocalypse was equally impressive.Through countless brutal battles, he ultimately established the largest and safest settlement in the dying apocalyptic world, making an extraordinary contribution to the survival of humanity.

The aliens came with hostility.
Facing the invasion of aliens, human beings are weak like ants.
So this is the end, the real end.
But there is resistance when there is an invasion.
For some, this is not the end, it is war.
So this is war.
Real war!

- Description from Qidian

Leiyin accidentally crossed into the One Piece World, and accidentally obtained the Naruto System.

One-eyed Wolf Lecan is a skilled adventurer who has conquered many dungeons all over the world. He had been going solo for a long time, but in the last three years, he’s had a partner. That partner jumps into the black hole together with Lecan, and both go their separate ways as they fall into another world. Dungeons and magical beasts also exist in that world. After learning the native language, Lecan goes on a journey. Meeting a good teacher, Lecan studies medicine making and magic under that teacher, and begins his dungeon explorations for real.