The artist's name is 海月餅 緑茶. This man here has a very promising story about wild Maricha and ko Flandre (Flanche?), I will probably upload it when he finishes the story.
If there's not enough food for a 3 people hibernation just ditch your children. Pretty smart tbh, better than trying to survive with ko, end up eat up easy for ko's food, and ko dies anyways since it can't survive without parents. Though it would be smarter if they just don't have children when winter is approaching
It's even better if they instead of abandoning it, just eat it rìght on the spot and take the cardboard box with it. Hey, she cannot survive, so why waste resources like that? Scared the taste buds would be ruined? Just mix it with some kind of dirt or bitter grass and problem solve. Not wanting to be uneasy because killing a yukkuri is uneasy? So abandoning your very own child to death is not? The box is small and dirty? Better than nothing, remember that this is winter, so it's almost guaranteed that they won't be able to find a better box than this one.
To me, yukkuri parents ditch their child, but are kind enough to leave the house for it. Even with skilled hunter type, winter is unbeatable opponent. Koyu will die for sure. Or it's lucky and becomes "pet" (similar to "Maricha's ordeal").
Maricha's long, long Winter begins now...~Maricha's Mister Winter~...Dwaddie?
Mwommie?