Shitsurakuen

Himoto Sora is a student who values fairness and aspires to be a knight. After transferring to Utopia Gakuen, she discovers that male students there engage in a game resembling virtual reality. In this game, they use female students as weapons in battles to gain social standing, treating them as objects. Witnessing one girl being mistreated, Sora intervenes. Due to an unexpected error, she becomes the first female to join the game.