Toaru Majutsu no Index - Volume 12, Chapter 2: What kind of penalty game? Pair_Contract.

This is a story of an ordinary boy gaining unusual powers from his nightmares… It all started when Lin Sheng experienced something strange on what he thought was just another normal day. He begins to have recurring dreams that lead him on an incredible journey of discovery as he encounters spine-chilling monsters and elusive secrets.

- Description from Novelupdates

At 3 years of age, her father went missing. At 15, the muscle in her hand snapped. At 16, her mother passed away in a car accident. At 19, she was framed by her uncle. At 22, she was burned alive by her newly- wedded husband and her best friend. Perhaps it was God’s sympathy that allowed her to return to the time when she was 15 years old to re-live once more. The previous lifetime of being low- key and having forbearance resulted in betrayal and misery. In this lifetime, she must be lofty and domineering to let those who have bullied her suffer a terrible end!

- Description from Novelupdates

Ning Jiang's father was a famous bridge designer but he was framed and the bridge he designed fell. He couldn't bear what happened and died soon. After his death, Ning Jiang's mother married another man who already had a daughter.

The new family treated Ning Jiang badly. Her stepsister, Mo Lan, even got involved in her relationship on purpose. As a result, her boyfriend betrayed her and Ni Jiang's heart was broken.

Meanwhile, Ning Jiang discovered that what happened to her father might be related to her stepfather or a man, Luo Hanshang, the fiance of her stepsister, who was in power of a huge business empire.

To find out the truth behind her father's case and even take revenge, she set up a trap for Luo Hanshang and attracted him successfully. She helped him solve a big case and won his trust. Then he married her as she planned. As time went by, he fell in love with her and even melted her heart, but she never gave up revealing the truth...

Transmigrating into the world of Douluo Dalu, I unexpectedly awakened the same Martial Soul, Luo Sanpao, as Yu Xiaogang, and was discovered and taken as a disciple by Liu Erlong.Originally, I thought I would have to live cautiously under Liu Erlong's protection for the rest of my life. But who knew that a system would suddenly appear, binding me to female protagonists and allowing me to grow stronger by earning “conquest points,” evolving my Martial Soul!Now that the system has arrived, Xiao Yu feels there's no need to live cautiously under Liu Erlong's protection anymore. Instead, he can openly rely on conquering a group of female protagonists to dominate Douluo Dalu!Wherever there are female protagonists, there will surely be Xiao Yu's presence!And wherever Xiao Yu's presence is, his Martial Soul, fully evolved into the Radiant Holy Dragon, will surely shine upon the world!Liu Erlong: “Xiaogang, let's keep some distance from now on. I'm afraid Xiao Yu might misunderstand!”Xiao Wu: “Brother, I've fallen for Xiao Yu. Please forget about me!”Ning Rongrong: “Xiao Yu, from now on, my Seven Treasure Glazed Tile Pagoda will be your exclusive money bag!”Zhu Zhuqing: “Xiao Yu, as long as you have the ability, I don't mind you taking all three of us sisters!”Qian Renxue: “For you, giving up the Angel God's position is nothing!”Hu Liena: “Xiao Yu, once I become the Pope, I'll immediately step down for you. I'll focus on being your wife!”