"So this came through a pigeon?"
"Yes. I guess is a sort of custom magic used to deliver messages," said Anya as she stared at the piece of paper in her hands.
"You are indeed right about that. This is a spell used to deliver messages and well, it is very common. You were not from the capital, right? Then it explains why you haven't heard of it," Ryfin explained as he stared at the paper in Anya's hand.
They were in the room provided to Ryfin inside the academy building—it was an office of sorts. Leon and Ellyn were also there and all of them were talking about the paper Anya got.
As Ryfin-sensei said, the pigeon that came to Anya and then turned into paper was indeed the result of a custom magic spell. This was used all over the capital and mostly by merchants, higher-class nobles, and the royal family.