The protagonist of Mine, Jin Yeonseo, steps out into the world and sees many things.
The countless people mentioned by 'Adam Lowell', who took care of her at the lab.
Nature.
The city.
All these countless things.
Among them, Yeonseo learns about life with people, something she never learned in the lab, through her parents.

Yeonseo isn’t a psychopath or someone with emotional issues.
She’s just someone who has lived her life as a blank slate, so she is as pure as a child.

But, because of her purity, her actions can sometimes become more instinctual and even cruel.

“I don’t know what kind of life Yeonseo lived before.”
Yeonseo’s stepfather, Park Hunmin, said this as he patted her head.
He was speaking to the girl, who looked puzzled by the gesture.

“But, I know you’re very special.”

As they lived together, there were many opportunities to witness Yeonseo’s special traits.
She didn’t know what a crosswalk was and got hit by a car.
But when everyone rushed over in surprise, she stood up completely fine, and the sight stayed vivid in their minds.

Moreover, her strange physical abilities and extraordinary intellect were often puzzling.
Though strange, Park Hunmin didn’t pry into it.