Okay, I loved this, I want more domestic lesbians. But... HOW!? (Scratching my head).
Science Babies
edit: Or I guess if you want an actual real-world reason, iPS Cells would be a good start. From my very limited understanding, they're capable of, essentially, being made into any kind of cell. They've been utilized already to produce viable offspring in mice, so there's a possibility they could be used to make actual, real, human Science Babies
.
edit2: Also I was looking forward to this SO MUCH! Kougi Hiroshi's ChikaRiko is my favorite LLS ship, and when I saw that WSDHANScanlations was working on this, I got so hype. Thanks you very much for your work!
I was just humorously pointing out, that the story failed to explain how two women simply jump into bed together, and make a baby. Unless I really missed a lot in health class, that is impossible, even with iPS cell tech. I'm pretty sure you would need trips to a fertility clinic, months , maybe even years of waiting, and lots, and lots of money. It definitely wouldn't be something two women could pull off, by themselves on a whim.