Counterattack System appeared when I'm already At The Mahayana Realm - Chapter 430 - : 429

The first time Yan Zhaoge crossed worlds, he landed in a martial warrior civilization that was at the peak of prosperity. He ended up in the book storage building of the the Divine Palace, which collected and preserved the classics of the entire world from all fields of knowledge. However, a world class calamity struck soon after and even the Divine Palace was destroyed.

Yan Zhaoge’s soul once again crossed over, but this time he arrived in the same world, except countless years have passed.

With his brain full of rare books and classics from the era of peak prosperity, Yan Zhaoge’s second crossing over to the present era was like a gamer who was used to playing hell mode suddenly finding himself playing the game on easy.

That was just way too awesome.

But before that, he needs to fix a certain problem.

“I’m not a main character? In fact, I’m actually the main character’s love rival and the antagonistic Mr. Perfect senior martial brother? This script is wrong!”

- Description from novelupdates

It started off peculiarly; first, his domestic cat refused to let him cuddle it.Lin Qiushi soon found that a sense of disharmony and incongruity began to pervade everything around him.Then, one odd day, he pushed open a door, and he discovered that the hallway he was familiar with turned into a boundless corridor.At both ends of this corridor were twelve, identical iron gates.he pushed one of the doorsThus, the story begins.Disclaimer: The content presented here is not authored by me. I kindly request that you extend your support to the original author by visiting jjwxc.net.Original Author Name: Xī Zǐxù / 西子绪

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