The Yukkuris’ Land Mine March
The Factory uses yukkuris to clear land mines from war-torn regions. To counter negative publicity from Yukkurinpeace, the "For Kids" section of the Factory's website simply says that yukkuris are used in these humanitarian efforts, and smiling cartoon yukkuris say how eager they are to help.
The grim reality:
Somewhere in Africa, yukkuris lined up cheek to cheek march steadily forward to the beat of a drum, setting off any land mines they step on. If they stray from the line for any reason (such as going mad from fear or chasing an accessory blown by the wind), they are killed with a small explosive device implanted in them.
One Reimu reminisces about her happy life in the rain forest before she was captured and pressed into service. She makes up her mind to survive and somehow return to her children, but at the end of the story, she steps on a mine and is killed.