A Tale of the Secret Saint ZERO Novel Volume 3 was written by Touya with illustrations by Chibi.

As her time on the west coast draws to an end, Serafina - second princess of Náv and budding saint - decides to make one last visit to the Spirit Lord Oligor, this time with Sirius and the other knights in tow! What will they think of this "friend" Serafina is so eager to introduce them to? Next, everyone returns to the castle, where Serafina looks forward to more happy days with Sirius. But trouble soon rears its head as former members of the First Knight Brigade, Scheat and Miaplacidus, find themselves at odds with the current members. And speaking of trouble, what's the black fenrir been getting up to, anyway? Find out in this third installment jam-packed with short stories about the future Great Saint of Náv!