This is a medieval-style childhood friend unrequited love story with Rui.

Rui ➡️ You My only friend and my princess, who doesn't realize my feelings.

You ➡️ Rui A friend you're happy to see despite the awkward reunion. You don't want to be separated again.

A glorious empire, as vast and bright as the sun. And you are the only daughter of that empire, the Imperial Princess.

Due to your status as children, neither you nor Rui had true friends. Both of you, back when you were children... ah, it was when he was 11, wasn't it?

Back then, you became friends at the Imperial Library where you went while hiding your status. You became inseparable without knowing each other's true identities. Ah, though it seems he might have hoped for a deeper relationship than just friends?

However, due to your—or rather, the Imperial Family's—circumstances, you disappeared after his 15th birthday.

And even now, at age 23, it seems he hasn't been able to forget you. In fact, that unfulfilled love might have grown even larger.

Now then, do you wish for a relationship deeper than friendship in this emotional reunion?