This one... where to start. Miyu is a girl of a family down with luck so she gets chosen to be „sacrificed“ (made a wife) to the snake god who is lord of the mountain. She gets delivered to the snake god, who turns out to be quite a decent character; he is caring, patient, well-meaning to his new wife. The manga examines their daily lives as a newlywed couple, how they get used to each other and how she slowly changes from a traumatized and terrorized young woman into a blossoming young wife.
Now, Daiya is attracted to her as woman (or was it female?) and as his wife. Now, here i'd usually write that he can shapeshift into shape of a gorgeous bishonen.
Only he cannot. he's a giant snake. A bona fide snake. No transformations, no bishonen, no shapeshifting god, just a giant snake. That's it. And a snake god that has hots for his human wife.
Now, given, he is very caring and concerned for his new wife, but he DOES want „it“. But as discomforting as this sort of thing is to me, I think it was handled in a very good way. For one, it happens after there is a build up of their relationship, trust (and internal drama) to the point that she is (still hesitantly but out of her free will) OK with it.
Thankfully, this isn't a hentai and sexual intercourse is shown sort of discreetly on the parts so it's left more to imagination. And frankly, it doesn't happen that often. Instead, manga mostly focuses on their daily lives, relationship, and what challenges they overcome together.
I think the snake in this relationship can serve a symbol of being married to any sort of person that's caring tho definitely physically unattractive and how such a young woman copes with her situation and learns to appreciate (and ultimately love in her way) being married to a partner that isn't the biological definition of attractiveness.
You can substitute a it for a fat ugly man. Or an old man. It shows how a young woman in traditional setting learns to live, cope (and ultimately care about and love). And i think it's a good topic to explore, because such fate happened to untold millions of women throughout history.
As such, it raises questions of what is love and affection is truly made of, under what circumstances can it develop and also how circumstances can influence human beings and their mental and emotional state and even sexual preferences. I think this is, aside of showing their daily lives, the crux of this manga.
Artwork is traditional manga style of 1970s, hand drawn and shaded by hand, and the style is both intricate and rough, it fits well with the overall feel and the natural and historic setting in which the manga happens.
I find myself gladly returning to check up on upcoming chapters because i know that their relationship is built on mutual trust and respect, and that although one. It's also interesting to see Miyo grow from a traumatized and timid young woman who lost all hope into a (despite everything) happier and stronger person who can voice and (when needed) impose her opinions even on her mountain god husband.
Its an unusually manga that can potentially serve to ask many questions about sex, as well as answer them in it's own way.
I'd say it's worth the read. Didn't regret it.