[Machine Translation] I can't believe we are going to explore a dungeon as an extracurricular lesson...that's only possible in Kikunoi, a neighborhood of demons and monsters.... I can't refuse it because it's training for when the time comes, but it's scary. And Regulus and Kanade-kun came along too. I wonder if they'll be able to handle such a little guy. I'll tell you what I think, it's a horde of demons! I'm going to get you out of here! Isn't my little brother too cool to hold up a wooden sword without a care in the world? He immediately defeated an opponent that even adventurers couldn't handle! Leave the safety of your territory to us! The fourth installment of the young brothers' territory management fantasy! Elementary school age and up.