[Demon Slayer Crossover] That Demon Slayer Thing

I'm back with updates! If the story gets locked from time to time, it's because I'm revising it! I'm Kawada Akari, an ordinary, passing-by otaku gamer. I stayed up all night grinding FGO, then transmigrated?! And the place I transmigrated to is seriously bad news?! So why is there something calling itself "the Grail-kun" waiting for me as soon as I arrive, saying it'll grant my every wish if I fulfill the Counter Force's desperate wish?! Mom, I don't want the Holy Grail. I want to go home!!! 1. First-person narration, a goofy and useless heroine. I'm writing this for love, and I'm not very good, so please don't flame me. 2. It uses Nasuverse settings, but doesn't go into them deeply. You can enjoy it even if you haven't read or watched the Fate series. 3. The heroine is a Demi-Servant like Mash, which means she has a cheat ability. ( 4. Pairing undecided. The bonus chapters will follow separate what-if routes. Theme: A heroic spirit girl's journey through Demon Slayer