MTL - Billion Technology Crystal System - Chapter 102 :Failed?

A skilled but unfortunate modern-day assassin was killed in a freak accident. However, he soon found himself summoned to another world by an evil wizard, who had him possess the body of a boy as an experiment. After successfully planning the evil wizard’s downfall, he used the wizard’s body as a springboard to gain influence and power in his new world.

- Description from Novelupdates

Born into one of the wealthiest families in the country, Layla Rosenzweig's true identity is taken away at the time of her birth by the mistress of her father. She is forced to live as the illegitimate daughter of the Rosenzweig Family. Everyone treats her no less than an outsider in her own house. “This is mine. That is mine. In fact, everything is mine,” Layla's half-sister told her. Everything that belonged to Layla is given to her half-sister, including her boyfriend. Then, she is forced to marry her ex-boyfriend's ruthless uncle, Lucius De Salvo, the most terrifying man in the country. Lucius De Salvo is known for his ruthless ways to get his work done. His name is enough to terrify people. It is said that he is a man devoid of emotions. He will find pleasure in people's pain and misery. He loves to torment those who come under his radar. But why is he so lovely to Layla? Or is it just a pretense?“Are you ready for the wedding night, Darling?” Lucius asked. “I've desired you for a long time.” “What?” Layla was shocked. “Why would you?” “Because you are Layla Rosenzweig. The woman I like.” With that, he captured her mouth for a passionate kiss.

Zhong Yuhuan had transmigrated into a book and became the female supporting character who was destined to die an untimely and tragic death. Coincidentally, her family adopted two boys — the male lead and the villain of the book!

The male lead of the book would become a superstar in the show business and the villain a super successful and powerful businessman.

Zhong Yuhuan thus began her life of raising the male lead and the villain while faceslapping other scums. She would grow up quickly and live the life of the rich and powerful Mary Sue!

- Description from Novelupdates

The Dancing CorpseKnown as the weakest party in the entire kingdom, they were mocked by others for how pathetic they were.The main character, Adonis, who was supposed to be the plot armor of the story, could barely protect his own harem.That was until Gideon arrived—reincarnated into the story as Adnois himself.But the two were completely different. Why? This new Adonis was blessed with a unique system.He could level up everyone in his party, taking them from a measly F rank to S rank.[You have registered xxxx as your party member.][Current relationship score is 60%; you can only increase from F to C rank.][Improve relationships with key characters to unlock higher ranks.][You can now perform a class change.][You have gained a new skill from leveling up your party members.][You have now unlocked the skill-back system.][For every party member you level up, you gain their skills and talents.]Adonis was now on a journey to build the strongest harem to ever walk the earth.