Easygoing Territory Defense by the Optimistic Lord: Production Magic Turns a Nameless Village into the Strongest Fortified City Novel Volume 5 was written by Sou Akaike and illustrated by Kururi.

With the aid of the fortifications Van erected for them in the heart of enemy territory, Scuderia successfully takes down the Yelenettan border fort! Just to be sure Yelenetta never reclaims their captured outpost, Van decides to transform it into a Japanese-style castle. Problem is, a castle needs a lord—and Van has his own town to take care of. Enter Van's older brother Murcia, freshly exiled by their father just as Van once was! Is this just the lucky break Van needs—or a sign of more family drama on the horizon? One way to find out!