Summary by Wrathkal
Single mother Reimu and three koreimus. Anon puts them to sleep with a spray. She wakes up to hear her koyukkuris screaming as he bullies them with a finger, and tries to punish him, but he doesn't seem to respond. In the end, she settles for getting the kos into her mouth, and they think they're safe.
As the human hasn't moved, she thinks her last hit killed him, but when she's nearly at the door, he moves and brings her back. It repeats a few times, until Reimu realizes that with the length of time the kos are in her mouth, her saliva is melting them. That's when Anon sticks his hand out, like in the picture.
Reimu understands, that if she spits out the kos, he will crush them. So she doesn't... and the kos eventually start to dissolve. Hearing one of them die, she snaps and screams at the human, who watches her silently. Her scream causes the second of the kos to come out, its damp skin splattering over the floor, and its last words is to be let out.
Just as she thinks that things are over, she hears the voice of the last koreimu, saying 'happiness' as it eats the corpse of its dead sister. Finally recognizing the importance of her little ones, she begs Anon to save the ko, and prepares to spit it out.
Then a shadow falls over her face, and she looks up to see the hand in front of her again. All she can do is whisper 'why', as the evening sun illuminates the situation.
The koyukkuri's voice can no longer be heard.