Mimizuku to Yoru no Ou - Chapter 8 - Deliverance II

Su Yan adored Xie Yu for many years and finally got what she wanted, but Xie Yu ran away on the wedding day, making her a laughing stock. At that time, Bai Xingfan appeared in front of her. He held a black umbrella in his skeletal hand to shield her from the heavy rain, and the other hand stretched out in front of her with a gentle and determined voice: “Don’t be afraid, still With me.” Su Yan was stunned with tears in her eyes for a long time, and finally, she reached out to Bai Xingfan.

- Description from Novelupdates

There are a total of seven sins, and a revelation is made to a young man named Alex that he is destined to become a demon lord, more especially a demon lord of sin called LUST.

It's not like he can change that and because he always knew something about himself was different—not in a physical sense, well, maybe a little—and not in a mental sense—but rather because he is thrown into a demonic war that compels him to accept his new reality.

He was only aware of a difference in himself. Relating to him and the ladies who are drawn to him... Well, it was more or less like he was a magnet in front of all the girls, and all the girls were drawn to him like a metal.

The two faced number one female spy transmigrates to a different world and becomes an outrageous idiot girl. When she woke up, what she had to face was consecutive blows of the decline of her family clan, her crippled martial skills, and her disfiguration. To protect her family, she must obtain the treasured book, obtain outstanding achievements, summon a dark beast army. Wait and see how in this unfamiliar, dark magical continent, she dies and becomes a demon then steps up to the top, making all of the formidable people in the world bow down to her in respect.

- Description from Novelupdates

Content Warning:This novel contains mature themes, including explicit sexual content, strong language, and adult situations. It is intended for readers 18+ only. Reader discretion is advised.______________________________________________________________________Haruki thought marriage would bring him happiness. He had been in love with Satomi since high school, and after years of struggling together, they finally built a stable life. But stability came with a price.Satomi was always busy. Work became her priority, and Haruki… was left behind. The warmth of their relationship faded, and intimacy became a distant memory. Nights felt colder, the bed emptier—even when she was right beside him.Loneliness gnawed at him.Then everything changed when Satomi’s family invited him to stay at their luxurious home.That was the first time he truly saw her mother.Kyouko.Beautiful. Elegant. Younger-looking than her own daughter. And for the first time in years, Haruki felt something awaken inside him—something dangerous, something forbidden.Living under the same roof, two lonely souls cross paths. And as Haruki struggles with his emotions, one question lingers in his mind:What happens when the one who understands you most… is the one you should never desire?