"The dragon is biologically incompatible with humans, but will breed elves instead~ No wait, elves and humans are as different as beetles and cock⭕roaches~"

The Dragon dislikes humans. It's physically impossible for them to tolerate them. Those colorful, garish heads (since this is another world), their murky and filthy magic power, how they're small yet surprisingly quick, and above all, the sensation when crushed. They have strong reproductive capabilities, always travel in groups, and where there's one, there are ten. It's just like cock⭕roaches! Disgusting. That's why the Dragon lives in fear of humans day after day, quietly raising Elves deep in the mountains. What's that? Elves are okay but humans aren't? Think of it as the difference between beetles and cock⭕roaches. This is a story about such a Dragon being revered by the Elves, exterminating humans whenever they happen to come along, and living a carefree life.