RWBY: The Boy Named Rin

In Vale, there's a coffee café that serves heavenly drinks and questionably amazing curry that pairs so well with the coffee. Even renowned Headmaster of Beacon, Ozpin drinks it (Even if the majority don't know it). But who is the owner of the café? Why is he so young? What is a Mistralian doing in Vale? How does he make a profit with such cheap coffee? And why does he make such good coffee?! Oh, and a group named the Phantom Thieves are making a fuzz in Remnant. That's not that important though, Leblanc's coffee is more interesting than them. RWBY X Persona 5