Goodbye, Overtime! This Reincarnated Villainess Is Living for Her New Big Brother Volume 4

The eventful celebratory banquet is finally over, but that does not mean Ekaterina and her dear brother, Alexei, have any time to unwind and enjoy their summer vacation after triumphing over the hateful Novadain. Running a duchy is hard work, and Alexei has much to do—so much, in fact, that he finds himself struggling to squeeze a very important pilgrimage into his tight schedule. Something has to be done lest the family earns the ire of the mountain gods, and Ekaterina is not about to stand aside and watch her brother kill himself with overwork. That means it’s time for this not-so-villainous villainess to make herself useful by running her first errand! Ekaterina gladly embarks on her journey, eager to learn more about the Yulnova Duchy, but what dangers and discoveries await her along the way? The roads of the duchy are sure to hold many secrets...

[From J-Novel Club]