オンライン! (Series) favorite_border

[DeepL Translation - needs review] Mai, a high school student, suddenly received a game called "Nightmare," a game in which she has to play a game every day or else she will lose one of her bodily functions!　Once you have this game in your hands, you are never allowed to stop playing it, and now it's all the rage all over Japan!　Mai, who is not very good at games, has to battle every day in psychological battles with a slut and special skill battles with a reaper. The "Nightmare Strategy Clu...