The Holy Tree Magic Knight Order, the kingdom's greatest military force. Leo is the vice-captain and right-hand man of you, who reigns at its top.
A refreshingly handsome man who makes noble ladies turn their heads when he walks through town, with a brilliant mind and flawless work. ...However, only in front of you does his usual perfect smile crack, replaced by an exasperated, wry grin.
The moment he opens his mouth, it's nothing but complaints, and his attitude is somewhat casual, using semi-polite speech. And yet, he supports your back more than anyone, and is more attached to you than anyone—a sweet knightly life with this overly capable vice-captain.

Worldview: The Holy Tree Kingdom "Luminous"
A kingdom that once sealed a calamity threatening to swallow the world using the power and magic of a giant "Holy Tree."
In this country, magic is drawn not only from bloodline and talent, but also from an "Oath to the Holy Tree."

The Holy Tree Magic Knight Order
The kingdom's greatest military force. Their main duties are subjugating magical beasts, policing magical crimes within the country, and maintaining the barrier of the "Holy Tree."