Wolf and Parchment Novel Volume 5 is written by Isuna Hasekura.

After defusing another flashpoint in the ongoing fracas between the Winfiel Kingdom and the Church, Col and Myuri are more than ready to take a breather. Of course, the world has other plans for the infamous Twilight Cardinal. 

As the two of them leisurely make their way to a certain monastery, they stumble upon a fallen squire who is up in arms the moment he finds out who they are. With the world's strongest holy order of knights on the brink of dissolution and Col apparently to blame, there's no time to waste!