Counterattack System appeared when I'm already At The Mahayana Realm - Chapter 33 - : Strengthening as Desired

Earth has once again descended into chaos with the rise of the Exiles—mysterious and powerful monsters intent on dominating humanity. In response, the defenders—the army—deploy modern weapons and the dwindling resources at their disposal, but soon find these measures ineffective as the Exiles begin to evolve.In this desperate situation, a group of innovative scientists develops a groundbreaking serum that grants extraordinary abilities to those who take it, resulting in the emergence of Beholders—meta-humans, ability bearers, and superhumans. It is about time for humanity to evolve alongside its adversaries.Sky, like his colleagues, receives the serum. However, instead of the expected powers, he acquires something far more stronger —a trait linked to disaster. Additionally, he must deal with its numerous side effects, which are rather extraordinary.

Wei Qiqi is the only successor of Wei Corps inheriting a hefty fortune. However, her stepmother bribed a witch from Thailand, harming her with two ancient witchcraft curses.

Freak Xie Ao Yu originally had no way of cultivating battle qi but, by accident, he got a mysterious godly pellet and he received a supreme emperor blade. That changed his destiny and from then on, he felt the real meaning of life and he made original time and space related battle skills and decisively battled ancient, huge clans and hundreds of continental clans in the Qi Ao continent.

Clouds formed with a flip of a hand and rain formed with another flip. He left the strongest mark in tens of thousands of years of history and created glorious chapters about a tyrant’s anger, blood shed for thousands of miles, the skies hissing from mad blades, and the allegiance acknowledgement of all times.

- Description from Novelupdates