In Belief of a Thousand Year Long Love
After the mercenary Kasfar had his heart broken by his wife who cheated while he was away working, he's been closed off for years, until he rescues the elf Claudia and brings her home. Though both are a little unsure, he feels it may be time to open his heart, and she wants to be the one to do it for him. The smut was decent, and there aren't that many good fantasy smut stories, so I'll give it that, but the story didn't really engage me. I didn't feel the character's motivations enough, and Kasfar really wasn't that likeable. Trigger warnings: cheating, attempted rape, murder.
Savage Castle
A notorious villainess who no one respects orders her manservant to sleep with her regularly, despite knowing he's in love with another, because she's so alone and desperate. Meanwhile, he's actually a deposed prince who thinks the whole thing is entertaining. Trigger warning: neglect, abuse, power imbalance, lying/manipulation.
Shinobu Koi hodo -Suki sugiru Danna-sama ni Dekiai saretemasu-
Ayame lives in a ninja village but sucks at being a ninja, and her one solace is watching her secret love, the future village chief, Shoma. But when she hears he's getting married, she decides she needs to step it up and move on with her life, so she asks to learn seduction techniques so she can work as a ninja. To her surprise, Shoma herself is her teacher on the night of, and the next day, he asks her to marry him! Ayame is under the impression Shoma loved someone else so he was forced to marry her, but really he's been in love with Ayame for a long time. Had some cute moments, but honestly, Shoma is a red flag. I lost interest and stopped reading around chapter 30.
The Heat of the Reincarnated Villainess
Rose was isekaied into the role of the villainess in a game she played as the fiance of crown prince Theo, but when the game is supposed to begin, she and Theo suddenly go into heat and find out they're "the one" for each other. Though Rose likes Theo, she knows that their marriage will lead to the bad end, so when he suggests trying to get their engagement ended, the couple set out on a journey to break up. So far pretty stereotypical, it only stands out as a romance fantasy webtoon because it has smut. I dropped off somewhere between ch 20-30. Trigger warning: dubcon (heat)
The Mating of Elves
In a modern world riddled with dungeons and shared between elves and humans, Pania the elf is a mid-level adventurer who has always looked up to the S-rank elf Naos, so when he's told he can't enter uncleared dungeons alone anymore, she jumps to convince him to take her as his partner. But once inside, they're hit with the reality that Naos is under a lust curse and only Pania's special ability to see the status window lets him know how to temporarily relieve it (through sexy missions). Pania convinces Naos to keep bringing her along as the only one who can help him, but they're both starting to have a hard time keeping their feelings out of it and meanwhile, Naos has a tragic backstory and motivations he doesn't think Pania can accept. I want to say, as far as smut manga for women goes, this one takes the cake. So, let's face it, the plot is just a setup for smut, but that's fine. It's fun, it's got cute moments, and it's actually showing the women what they want to see! The way they show Naos's genuine expressions of desire is way better than a stoic emotionless brick pounding the life out of her, and he's a unique and interesting male lead. 10/10 smut for women, would recommend. Trigger warning: dubcon(via missions).
The Lying Moon Princess's Marriage: I Will Gain the Wolf God's Favor