My first attempt at a Fate/Stay Night crossover with the Potterverse, I feel, was something of a failure. It was a bit too cracky in some regards, and while I may yet come back to Perils of Magical Investigative Journalism, at the moment, it remains firmly on the backburner. Part of the reason is that most of what I knew of the series came from reading fanfic and Wikis, so it's very much a rough draft. And even when I became proficient in doing Fate/Zero stories (namely my Potterverse crossovers Ex Umbra in Solem and Gorgon and Thanatos, along with my Thor crossover Light the Blue Touch Paper and Run Like Hell and my Final Fantasy IX crossover Kuja von Einzbern), I wanted to come back to Fate/Stay Night. And having actually begun to watch the animated adaptations, I feel more confident enough to come back to it. After some stories testing the waters, I decided on this one being the first.

One of the more fascinating characters in the Nasuverse is Medea. I would like to think that, if she had a different chance, she'd be a more heroic character, something I did for Light the Blue Touch Paper and Run Like Hell. Doing a Harry/Medea story seemed logical, but how to do it? This isn't that uncommon a pairing, with a few stories already present, including (albeit as part of a harem) my own Perils of Magical Investigative Journalism.

Interestingly, a lot of ideas came together. I posted a challenge in the forums of DZ2 and whitetigerwolf called Harry Tohsaka, and I realised it meshed well with my Harry/Medea story. While it meant that the initial chapters of the story would be heavy on the lead-up to the Grail War proper, I felt it worked.

A heavy influence on this story, even as it was still just a germ of an idea, was Neoalfa's excellent Path of the King, a Shirou/Medea story. While obviously I don't intend to copy that story, it was a strong influence on how I characterised Medea.

Also, for those wanting to see Hadrian Kotomine published, it will be published once I go over it, and maybe write a few more chapters.

Anyway, time for the usual disclaimers. Firstly, there will be spoilers for both Harry Potter and Fate/Stay Night.

Secondly, there will be heavy annotations, as is usual for my works. You have been warned.

Thirdly, this is an M-Rated work. There will be coarse language, violence, and sexual references. Again, you have been warned.

Finally, the following is a fan-written work. Harry Potter and Fate/Stay Night are the properties of their respective owners. Please support the official release. Otherwise, Medea will use you for potions ingredients…