Growing the Seed of Evil

Astraea, the world's strongest swordsman,
One day, she realizes that she has reincarnated as a character from a novel.
Not just any character, but the one destined to be killed by the final boss, the evil god...

While hiking, she saves a child from some thugs and discovers that this child is destined to become the evil god in the future.

"Well, if that's the case, should I raise him well and completely reform him?"

She decides to take the child in and raise him, but...

"Astraea, where are you going? Are you going to meet that guy again?"

The child who she saved becomes an obsessive man who follows her around, monitoring her every move.
Somehow... it feels like she might have raised him wrong.

(Source: Kakao Page, edited)