MTL - Take Taobao to the Ancient Times - Chapter 1 Hooking up grandpa?

Xu Xiang is a doomsday survivor who survived for forty years. Before she could fulfill her dream of becoming the overlord, she died.Opening her eyes, she returned to the fifteen years before the doomsday began. With the help of her family heirloom the dragon and phoenix ring, she hoards supplies and prepares to welcome the doomsday.Unfortunately, she was betrayed by her own family and died the night before the doomsday begins. With hatred in her heart, she swallowed the dragon and phoenix ring and jumped off the cliff.When she opened her eyes again, she was still alive, but arrived in a world that was plagued by endless wars and constant natural disasters. Although she's lucky enough to get another chance, she's unknowingly drawn into political turmoil where someone may be killed without knowing who the killer is.Can she survive in this ancient world that is more dangerous and full of hidden dangers than her own? Can she find the courage to trust someone else again? After two lifetimes, can she find her own happiness?

In order to chase down and kill her own murderer, Xia Yichu reached an agreement with the 233 system, and she will travel through the world to complete the task, and The 233 system helped her return to the original world.
However, Xia Yichu often encountered a broken BOSS while he was on his way to do the task. He did n’t agree with each other on the wall, the bed, the various patterns, and kept talking.
System: Please use one word to describe the other person’s impression in your heart.
Xia Yichu: Competent.
Shen Jiaye: Mine.

- Description from 69shu

“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…?”

Step inside if you dare, but be warned—this is no ordinary shop. Those who enter never leave the same… if they leave at all. A sinister force lurks within, fueled by a dark past and a thirst for revenge. The price? Twelve lives for twelve sins. As officials race to put an end to the bloodshed, the shop’s deadly grip tightens, claiming innocent victims one by one. Will anyone uncover the truth before it's too late? If you crave spine-tingling horror, heart-pounding thrills, and a mystery that refuses to stay buried, this book will haunt you long after the last page.