During a rain, voice of yukkuri singing can be heard. Under a tree is a nest hole of a Reimu and her KoMarisa.
Naturally, rain is enemy of yukkuri, but Reimu tried to calm her child as best as she could. She told her daughter about how she met with her husband Marisa who's no longer with them.
That's some time ago when Reimu is roaming the forest. She met with a Marisa coming with Mister Human. Usually, pet yukkuri are well nourished so they're "pretty" compared to wild yukkuri. Reimu fell in love with Marisa. Same with Marisa, she also felt easy with Reimu and she told her owner that she want to take it easy with Reimu.
After that, Marisa learned about living in the wild from Reimu. She had also learned a lot of things from television so she can find delicious food and build good home. Marisa is a smart yukkuri, but not only because of that.
From earlier, she had felt an uneasy feeling from her master, that's why she learned a lot. Marisa know she's being abandoned when they came to this forest.
Both live together and finally Marisa admitted that fact to Reimu after their marriage life settled down. Even so, they love each others and that night they refreshed. Reimu had a mammalian pregnancy afterward.
Marisa grow into a good hunter who can get food for Reimu who can't move because of her pregnancy.
One day, close to the day of birth, Marisa returned home. The back of her head is opened and she's leaking fatal amount of paste. Quickly Marisa told Reimu to shut up and close their nest with grasses hated by dogs. As long as they stay quiet, they would be safe.
Mister Human is coming and used dogs to do Extermination.
This forest is far from human village, so the only human Reimu ever see is the kind Mister who bring Marisa. She still can't imagine human would do such cruel thing to Marisa, must be the dogs.
Marisa's wound can't be healed just by yukkuri. Even so, Reimu still keep on licking. She can't just stay and do nothing.
Two days after, the food reserve is depleting. Reimu goes out of her nest to ask for help, but she didn't meet anyone. The forest is silent.
After that, she gave birth to an easy baby yukkuri. The baby fly to Marisa's hat that now they used as bed. The baby is an easy Marisa that looks like Marisa. Now Reimu can't take it easy and have to do both food gathering and raising her child.
More problem came because her daughter can't eat. This Marisa inherited her father's paste who has eaten yukkuri food since baby. Thanks to that, her yukkuri's natural ability to change things into paste has weaken.
Reimu can't understand that and keep trying to hunt for more food. Sadly, Marisa is born without the ability to eat natural food.
Then, back to the rainy day, Reimu is waiting for the rain to stop. If the rain is over, they can bask in the sun and the little one can feel easy.
Ever since her baby is born, Reimu keep on smiling no matter what. She must let her baby take it easy, she must not make her worry.
Then, a strong wind blast into their nest. Reimu tried her best to rebuild the barrier while telling her child to hide in deeper part of the nest. But Marisa doesn't move at all. Even when her hat is blown away, she doesn't move.
Reimu finally accept the fact that her child has died.
"Take it easy!" Reimu tried greeting, the only thing KoMarisa should be able to do. It came with yukkuri's instinct.
Even then, KoMarisa is silent.
Little one can't take it easy.
Reimu doesn't do anything wrong, in fact she has done well. But right now, she can't do anything but blame herself. She doesn't even move to close the nest against the dangerous wind and rain.
"Marisa... can Reimu take it easy now ?"
Rain stopped and Reimu survived.
After awakened by the sunlight, Reimu saw the nest she built with Marisa. The bed, table, food storage, all is ruined by the rain. The floor is wet and the hole is humid. KoMarisa's dead body has just started to rot, but the death stench already fill the place. This is no longer a yukkuri's nest.
Reimu want to go outside, but her feet has melted. She can't get out of the uneasy place. The voice of her screaming echoes in the nest, adding to her despair.
There's no other yukkuri left in this forest to help her.
There's never any predator yukkuri in this forest to kill her.
In the end, only time will give her a slow death in despair while exclaiming Easy, Easy.
Several years after, the forest is opened by human. They build cottages and golf course. There's no more any sign of yukkuri ever living in that place.