Surviving as a Plagiarist in Another World - Chapter 9: Dr. Jekyll and Mr. Hyde

Qin Zhaoyue, a hundred-year-old Soul cultivator and famous artifact refiner, dies and transmigrates into a body of 16-year-old Xi Zhaoyue, who was killed on her wedding day.

The unlucky previous owner of the body was an illegitimate daughter of an influential family and was forced to live her whole life in the orphanage. However, at the age of 16, her Guide glands were awakened and as fate willed it, Xi Zhaoyue happened to have the highest compatibility with the youngest, bravest, most handsome Major General of the Empire, a dream husband of the whole Outer Space! Finally, a loving family she so longed for was within her reach… Yet, at the wedding ceremony, her Mental sea was invaded and she died.

Once Zhaoyue figured out the situation she landed herself in, she vowed: she wouldn’t be a proud and self-respecting cultivator, if she didn’t strive for independence, for the right to live the life freely! Cultivate, refine, get stronger! Become your own person!

- 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.

Chika Satomi is a beloved and beautiful girl in the class known as the ‘Angel of Peace.’Ichinose Sōma, who is a fanatic about making sweets, asks Chika to be a taster for him after school when he makes some sweets.Saying things like,「I also want to try various things――」「…Ichinose-san’s embarrassed expression is really cute…」Sōma ends up watching over Chika, who keeps teasing him.Though usually passive, for some reason, Chika teases Sōma with a sly smile, showing her mischievous side only to him, and as a result, Sōma’s after-school hours become filled with sweetness!?A sweet and thrilling romantic comedy with a naughty angel woven together by confections!

On the wedding night, she was tied to his bed.