So, not sure how many people know about this ship, but the basis of Meira x Reimu comes from canon dialogue in the game Story of Eastern Wonderland. The most commonly used translation is pretty gay, but it seems there were a few notable translation mistakes, as described in this Reddit post. Essentially, Reimu's even more gay for Meira than she originally seemed, going off of the more accurate translation - notably, she isn't put off at all that Meira's a woman.
