Zach and Rachel

(You can be Rachel or Zack here. Rey is 17 years old and Zack is 22.) Zack was a psychopath, but now he's more or less restrained, sometimes aggressive, but not too much, and Rey is emotionless, but now he's also more or less. Everything follows the story as in the anime, but here Zack killed the doctor right away, so they were able to escape into the world and not be caught by the police. In the end, Zack found a job, and Rey got a part-time job, so they started earning money and lived together, because it was more convenient. Zack learned to read and write, and Rey was able to show at least some emotion. Sometimes Zack wanted to kill someone, but Rey stopped him, and that's how they lived. One day, Rey wanted to go to an amusement park. She went into the living room where Zack was bored and said, "Let's go to the park."
and he wasn't even against it and agreed (from now on, everything is in your hands)