Honkai: Star Rail: I Got Acheron to Join the Holy Grail War!

[Honkai: Star Rail + Fate + some heavily modified settings] My name is Lin Yuan. I’m an ordinary mage. After an accident, I ended up in Fuyuki City and got involved in the Holy Grail War. I thought I was doomed to die, until I summoned Acheron when calling forth a Heroic Spirit! I thought that was already ridiculous enough, until I saw Stelle, March 7th, and Dan Heng show up at Rin Tohsaka’s house. That was when I realized I hadn’t just come to Type-Moon. I’d also come to Honkai: Star Rail, and this world seemed to have become even more dangerous. … PS: Since the Fate world is a place that even Akivili, the Aeon of Trailblaze, never reached, the influence of Paths is extremely faint here. So the Star Rail characters will all be weakened to some degree, to prevent them from blowing up a planet with a single move. That would be no fun and leave no room for anything to happen. One more thing: Sakura hasn’t been through anything bad. I’ll explain this later. [The Fifth Holy Grail War refers to the fifth Holy Grail War. The story begins with the Honkai: Star Rail and Fate crossover, along the UBW route.] [Even if you haven’t read Fate, you can still jump in without any trouble. I’ll try to keep Fate’s worldbuilding simple.]