Shining blond hair, an unrealistically handsome appearance, and deep eyes that seemed to hold a story.

……And

clothes so extravagant you wouldn’t want them even if they were free.

“Uwaaaaah-!!”

“Aaaaaaah-!!”

Just like that, one day, he fell into our house.

“My name is Leandros Julian Terrion Etsina. I am the second son of a ducal house and the official heir.”

At first, I thought he had come out of a movie.

From one of those many European historical dramas.

“This is a cellphone, this is a laptop, and that’s a pair of headphones. They’re all expensive, so don’t touch them carelessly. Especially the laptop.

If I lose my assignment, I’ll charge you with property damage and send you to jail.”

“Outrageous! No one may imprison me without His Majesty the Emperor’s permission!”

“Kid, this is a democratic republic protected by a constitution, so that kind of thing doesn’t exist here.”

A twenty-year-old knight and the next duke.

That man, who had just become an adult and wore a sulky expression, looked quite cute.

“Still, let’s not get too attached. You have to go back anyway, don’t you?”

……But it’s never that simple.

In the end, in just a few days, in that moment when he whispered love—

he vanished just as suddenly as he had first appeared.

---

It was only after he left that I learned where he had come from.

A romance fantasy novel about 1,000 pages long.

And unintentionally, this time, I ended up entering his world.

But in the world of the book, ten years had already passed, and Leandros, still wearing the face of that lovely young man, had become a completely different person.