MTL - The Ultimate Student - Chapter 3137 conceited

“I’ve been possessed into the controversial makjang drama ‘Gwangin’ (The Lunatic). Of all roles, I’m the omega secretary to an alpha with omega-phobia. It’s hard enough hiding my identity, but I’m also in charge of all sorts of annoying tasks: managing the protagonist’s diet, wardrobe, and house; coaxing and soothing the beta he loves. My goal is to survive until the ending where the protagonist meets the strange beta who thinks even his obsession is love, leading to a happy ending… I think I smell an omega somewhere.’ ‘That’s… impossible.’ If I speak carelessly, I die. If I mess up my work, I die. If I run away, I die. And if the fact that I’m an omega is revealed… I really die. ‘Right. It shouldn’t be possible, but that’s why I feel so f*cking awful, Secretary Kim.’ Will I be able to make it back alive…?”

She, a 21st century mercenary queen, had crossed over into a tragically betrayed body of a waste. Waste? She will show them what it means to be a waste! Betrayed? With the Ancient Manual in her hands, she will astonish all the despicable men and cheap women!

Wait! Didn’t everyone say that she was an evil woman which everyone feared? Why is his Third Highness, full of mystery and charisma, so interested in her?

- Description from Novelupdates

After being set up and killed by her half-sister whom her ex-boyfriend had cheated with, Mu Siyin woke up one day to discover that not only was she alive, but she had traveled back in time to 2 years before her death.

“Wife...”“Not wife, ex-wife!!” She gritted her teeth, glaring at the handsome man who tried to please her.“Wife...”“Get lost! Turn around, walk ten meters forward, open the door, and leave, no need to see you off!” Looking at the flattering smile on his face, she finally couldn’t hold back anymore. She kicked him, then turned around, tears streaming down her face.The groom didn't show up for the wedding, yet he treated her tenderly, only to realize it was his way of humiliating her. The love she gave finally had a return when he admitted he loved her. On her most precious day, he gave her the most painful blow again. Was that unbearable scene the “gift” from him and his first love? After signing a divorce agreement, she truly felt that her marriage to him was just a joke. However, when she remarried, at the wedding, he domineeringly tore the wedding dress from her body.Facing the man she once loved the most, she smiled calmly: “Ex-husband, can you ever stop messing around?”