I was pleasantly surprised to see Clannad here, I watch the entire series once or twice a year, and have done every year since I discovered it in 2015. Though I have to disagree about a few, Frieren, AoT, SpyxFamily, and Demon Slayer in particular. I have grown tired of each of them in turn, for various reasons, but that is just my opinion.

Uh... It says who it is in the book, they are referring to Panchek, you know the guy who has been spilling their secrets and movements to the venin the ENTIRE time!? It even calls him out by name as Xaden's "new brother" Berwyn implies the venin see each other as family, and since Xaden didn't know about Panchek, it is likely Panchek was unaware of Xaden until the end of the book, which would therefore make them "new brothers."