Online Game Dark Genius Class

She and he are twins, but they are completely different in nature. As the younger brother, he is handsome and smart. As a sister, she is just an ordinary person, she looks pretty good, but she looks like a country bumpkin no matter how you look at her. Why did she come to the geek class called Dark, and why did she get involved with a virtual online game called "World Sacrifice"? Why did she become the leader of the class! Is she just good at playing computer games? ? Dark class, a class where geeks gather, they were assigned to this class on the first day of school. For two years, they have been exploring the reason until the girl awakens and the real battle begins! Come on horseback! We Dark are invincible! ---------------------------------- I will write campus stories at first, but later I will switch to online games. I am worried~~~My writing style is not good, please bear with me~~~Support~~~Spread flowers~~