That Bastard Got Beaten Up by His Senior Sister Again

Cen Jiarong is a medicine cultivator.

To be precise, she's the kind everyone hates and wants to see dead in that branch of medicine cultivators: a poison cultivator.

She's dated three men. She poisoned two to death, and the third is still lying in a hospital bed, unconscious to this day.

Everyone around her keeps their distance. Without anyone left to help her test her medicines, Cen Jiarong's already bad temper gets even worse.

Until she picks up a dog... No, a young man whose mind has regressed to that of a dog after being poisoned.

The fact that he's survived a deadly poison makes him an excellent test subject, so Cen Jiarong keeps him.

While working on an antidote, she makes a great many failed experimental medicines, poisons with strange effects... and terrible food.

They all end up in the young man's stomach.

But nothing happens after he eats them. In fact, he complains that it's not enough and sneaks into her room in the middle of the night to steal more.

Before long, the two end up in bed together.

After that, news often spreads around the sect: that dog of a man got beaten up by Senior Sister again.

Otherwise, how else do you explain the handprint on his face, his split lip, and the marks around his neck?

The rumors spread so widely that Cen Jiarong starts reflecting on what she does to him day and night.

If she treats him this cruelly, won't he hunt her to the ends of the earth once his mind recovers?

No, she needs to figure out how to poison him to death.

Before she can increase the dosage, the young man's family comes looking for him.

The richest sect in the cultivation world, whose leader is his mother.

The world's greatest physician is also in the sect, and he's his father.

They'll treat him themselves, since she couldn't cure his poison.

Cen Jiarong nervously wipes away her cold sweat.

Heh. Guess why I didn't cure him.

She moves out overnight, planning to lie low for a few decades.

On her first night in her new home, a figure appears inside.

Cen Jiarong thinks it's a ghost. She lights a lamp and sees something worse than a ghost.

The young man stands before her, arms crossed and leaning against the doorframe, his voice cool and edged with murderous intent.

"I heard you picked up a good dog, one who lets you beat him and order him around... So why aren't you keeping him anymore?"

*The female lead is not the male lead's first love, and she's three years older than him.

Premise: Staying by each other's side and falling in love.