Detective Agency of the Bizarre - Chapter 1: One. Exorcist

One day, Zhang Fan, a poor medical student, receives a medical system from the future. This turns him into a new shining star in the medical field. Along the way, he must face medical corruption, competition, and infighting from other doctors, and even find time for a love life as he strives for the top of the medical field!

- Description from Novelupdates

In the book “The Sweet Wife of the Campus Heartthrob”, Chu Yang was an extremely capable female supporting character. She came from a poor family and had a weak and delicate appearance. She followed the main couple around pretending to be pitiable while secretly trying to sabotage their relationship so she could take the female lead’s place.

Later her true colors were revealed and she was spurned by everyone. When she fell ill, there was no one to take care of her and she died alone in her shabby little shack. By the time her body was discovered, it had already started to decay.

Chu Yang, a witch who had transmigrated into the book: …Crash! Why bother with men! Making money is so much better than chasing men.

Much later, Chu Yang secretly felt up the abdominals of the man next to her: Mmmm, sometimes playing with men is pretty nice too.

Chi Yan, who had just woken up, felt his ears turn red: My girlfriend seems to really like my abs, I should work hard to maintain them…

What do you do when your brother dies because of some entitled assholes? You go undercover.My real name? Clare. But at school, I’m Clause—just another guy blending in. Disguised. Watching. Yes, a boy. No, it's not an all-boys school—I'm just deep undercover, hunting down the bastard responsible for my brother’s suicide. Nobody—and I mean nobody—messes with my precious brother and gets away with it. They better pray I never find them, because when I do? Death will be a mercy, and trust me—I don’t do mercy.And as for the egotistical Alpha and the narcissistic Vampire Prince? They can go fuck themselves. I don’t do mates, I don’t do claiming, and I sure as hell don’t do them.

Upon waking up, Ruan Xia had transmigrated into a webnovel that she had stayed up all night to finish reading. She had become the villain’s mother.

In the novel, after the death of her first husband, the original owner of the body had hooked up with a Mr. Perfect at the fastest possible speed. Worried and discontent that her son from her first marriage would become a burden on her, she heartlessly abandoned her son.

Having once held the best quality script and informed of future events, Ruan Xia looked at her still alive first husband as well as her future villain son. She sighed. She wanted to apply for a different script!

- Description from Novelupdates