MTL - Living in the Last Days - Chapter 31 side effect

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates

Ji Ling, who was transmigrated into the notorious body, after settling the foreign debts owed by the original owner, was persecuted by peach blossom debts before, and then had a mother who wanted to exchange her for money.

Suddenly, in order to repay her kindness, Ji Ling married her benefactor’s grandson, an elderly young man, in a flash marriage.

In the days after marriage, she summed it up in one sentence: My daily life with the face-blind old rooster.

Gan! !

- Description from novelbuddy

Avery Carter discovered that she wasn't her parents' biological child.After living with them for so many years, she discovered she was separated from her twin sister, during a fire at the hospital where they were born. In the chaos, the twins were switched, and she was sent home with the wrong family.She was a fake heiress.When their real daughter returned, she was abandoned and she was sent away to her barren birthplace.After returning to her real family, many people expect her to fall from grace, but she surprises everyone by lifting her biological family out of poverty.Rising to the upper class, she befriends celebrities and engages in battles of wits and courage with bitches and jerks.Now the most important thing for her is to draw a clear line with this dangerous billionaire, Alexander Moran, a businessman who arrived in the City on a mission to secure a deal with V Group and find medical help for his sister. However, meeting Avery turns his attention to her. He is fascinated by her strength and the way she handles everything thrown her way. The more he interacts with her, the deeper his admiration grows.What starts as a business venture soon takes a personal turn. Alexander is not only impressed by Avery’s professional abilities but also her charm. As they get closer, he finds himself wanting more than just a business deal – he wants to win her heart too.