Counterattack System appeared when I'm already At The Mahayana Realm - Chapter 521 - 520: Bystander A and Bystander B

Yiwen traveled through time, but Yiwen didn’t panic at all…

Because he traveled with him, as well as the character template in the mobile game, and the five devil fruits obtained by the lottery.

Yiwen believes that she can rely on the special physique obtained by charging six yuan for the first time, and the devil fruit in the backpack, and become a strong party in the world of One Piece.

Until Yiwen opened her eyes and saw a crimson dragon.

Only then did Yiwen realize that this was not One Piece at all, but Fairy Tail!

Start to capture Erza? The start was captured by Irene!

- Description from novelbuddy

In novels with a stud there is always a Senior Martial Brother like this:

In the early stages of the novel, his innate talent is high, his cultivation is good, his appearance is handsome, and he has an intelligent, cute younger Martial Sister as a fiancée.

In the middle stages of the novel, he is caught unprepared and defeated by a young disciple (the protagonist) in the sect who’s hardly remarkable at all. From then on, he falls from his godly altar and loses his brilliance. Even his young Martial Sister leaves him for someone else.

In the late stages of the novel, he continues to turn dark, going down the Demonic Path and becoming the major villainous boss. However, the protagonist still ruthlessly defeats him and his soul is eternally sealed.

Once Qin Mo opened his eyes, he discovered that he had become this Senior Martial Brother.

- Description from Novelupdates

Lieutenant Jack Fritz is a self centered American man of German descent. He like many joined the United States Navy in hopes of getting an easy life and easy money. In fact getting money and taking it easy is all he has ever really wished for in life.However life seems to have other plans in-store for Jack as he suddenly finds himself at the beginning of World War 3. Though his fight does not last for long as he is suddenly blown to bits by a missile and sent into the afterlife, but instead of going to heaven Jack is dragged to another place where he is given another chance at life by some fiery demon for a price.Having been given no other chance Jack does as the demon says and earns himself life again. Though he doesn't return to his original world, but a medieval one. With no guidance and no higher purpose given to him he simply decides to do the best that he can within this new world of his. This time he will for sure earn that perfect life of his and possibly a lot more.But little does Jack know his fate is not his own and there are many sinister things in-store for him. Also the world he finds himself in is not a safe or simple medieval world, but one beset by dangers from all sides that are already little by little driving humanity towards its extinction.

Yuka, reborn as the daughter of the universe's richest man, tries to live a simple life. She gets a big shock when she has to join Union University of the Alliance because of government rules.In university, Yuka picks an easy major, hoping to keep a low profile. But her plan doesn't work. She keeps facing tough situations that show off her smart mind and strong skills. Yuka tries hard to live normally but keeps getting pulled into extraordinary accidents.This is the story about how Yuka grows. It's about her trying to hide her real identity while dealing with a world that always challenges her.