Merlin's d*ck sprouting magic to be precise. And that sounded worse than it is, while simultaneously being just as bad as it sounds. Poor Guinevere.
I'd say she's still a science baby in so much as she wasn't a result of Arthuria actually having sex with anyone as Morgana steeling some sperm and making a test-tube baby/homunculus. ... Now, if you don't mind, I need to go question the life choices that led to me writing that sentence.
^Ristelle's one of the OG Tales yuri ships that the community loves, but aside from a flood of subtext there was never any confirmation be it inside or outside the game. They were definitely the first really strong pair that actually had a foundation for the shipping.
^Oh I'm aware that there was no sexual act commited (which really makes a line in the original F/SN visual novel very questionable). That's why I said poor Guinevere. Got no real husband, wasn't loved, had to raise a baby that she didn't even conceive. I'd still say that it's magic more than science, but sometimes the two are hard to tell apart.
I'm ruining this, but all I can think about is (horror movie spoiler alert): Eli: "Here, take this key. You're our last hope."
...Many year later, Umi is found hunging off of one of the castle/convent's windows...