Supernatural smut (Straight)

An older man wins over the monster in his closet, and the two form a special bond of codependence...

Choa was peacefully running her quiet, ordinary café… until one day, she signed a bank statement— and accidentally summoned a demon. The demon, Jinhyuk, summoned in the most ridiculous way, offers a contract: instead of taking Choa’s soul, he’ll receive spiritual energy through sexual intercourse.

Sierra Delight, heir to the black panther clan's leadership,
ends up in a political marriage with someone far beneath her—
a member of the rabbit clan, who always ranks dead last alongside the squirrel clan in the World Beastkin Tournament.

“Fine. Divorce it is. I’ll make sure he has no choice but to agree!”

With that resentment, she enters the bridal chamber…

Mia, a mermaid who has never been in a relationship, dreams of meeting a human prince like in fairy tales to turn her life around. One day, she is captured by Captain Jack of the Heaven, and brought out of the water. She’s disappointed when he turns out to be the complete opposite of the blonde prince she imagined. Yet, she can’t help but wonder, "Why am I feeling drawn to this pirate?"

Hana thought she would only be haunted by the demons of the past, however, she soon learns that demons come in many shapes and sizes. After coming in contact with lust demon Luxuria, Hana soon finds herself wanted by just about every lust demon that exists. There’s something about her body that makes her absolutely irresistible, making her the perfect prey. While she’s trying to get her head around this, Luxuria comes up with a preposterous proposition

The protagonist, Irene, possessed the power to purify demonic energy. However, after being judged as the lowest grade, she was never loved by anyone. Even in her final moments, she died completely alone—but when she opened her eyes, she had returned to the past. Specifically, right before she met her husband, Michael, whom she had ruined in her previous life.
But Michael is acting strange.

The main character, No Seona, impulsively picks up a snake on her way home from work. However, it turns out that the snake is actually a member of the Suin Clan (snakes that can transform into humans)! After regaining its energy, the snake transforms into a human and starts playing the role of a devoted husband. Seona finds herself increasingly drawn to this snake, her heart racing. And perhaps the snake feels the same way… As the two grow closer, an unusual tension develops between them.

It's already been two years since I ended up living alone on an uninhabited island.
Then one day, a man got hooked on my fishing rod.

[???]
– Caught on the 8th day of the 5th year.
– Height: 183 cm, Weight: 74 kg.
– Silver hair, incredibly handsome.

…And just like that, he was registered in my "fish encyclopedia."
But it turns out... he's the male lead (and a terrible guy) from the novel I loved!

The most powerful families of the court owe their influence to three things: property, titles, and magic. House Konbayazen, lacking a sorcerer, became a laughingstock among fellow aristocrats; that is, until the head of their House took his daughter Sabina and invited the curse of death upon her - turning her into “death incarnate.” This curse causes any who utter Sabina’s name to catch a fatal illness and contact with her flesh causes one’s own to rot away.

"A curse can be purified by entering into a relationship with someone of great divine power." Ayine Kruger is only level 7. She falls victim to a Class S curse when she tries to capture a monster. The only way to lift the curse is to drink the blood of someone with great divine power or have a relationship with them. She tries to reach out to the world's greatest warrior, Kellian Ayl. But he's tired of women using curses as an excuse to sleep with him.