Lasarus
The real reason the Rostrea were so stubborn about their land is because of the Monster Girls!!! That's 3 that have been encountered on/near her land, and 2 plant based ones! That's why it's so valuable, the reason the Elf ***** wants it so badly, and why they've been in decline since the last MALE died! It's never been a farm, but a ranch! How did he hide it from the girls though...