Ten years of experience as a high school teacher.

Dealing with problem students, emotional breakdowns, and stubborn teenagers?

Nothing new.

But that was in his previous life.

Reincarnated into a fantasy world, Cadel Evans is assigned one job:

Rehabilitate the strongest hero in history.

Reina de Astrea.

A walking disaster wrapped in overwhelming power,
capable of destroying armies, yet incapable of understanding people.

She doesn’t listen.
She doesn’t cooperate.
And she doesn’t care about consequences.

At first, it’s just another “teaching problem.”

Rules. Discipline. Communication.

Step by step, he tries to shape her into something functional.

And it works.

Too well.

“Cadel… where are you going?”

“I just need some air.”

“Without you… I can’t function.”

The strongest hero in the world stands behind him quietly.

Then softly adds:

“If you leave… I might break.”

Somewhere along the way…

He didn’t just teach her how to live.

He became the center of her entire world.

And that might be the most dangerous mistake of all.