Wrathkal said: The title isn't really 'things not said', it's 'things that couldn't be said'.
Reimu wanted to congratulate Big Sis on her child, stealing her lipstick to write a congratulations note. But when the Big Sis came back and said that she couldn't have children, Reimu said 'Then you just have to make more little ones!', not understanding. Big Sis snaps and kills the koyukkuris, but eventually realizes what she's done, and breaks down crying. Next, she walks towards the pair, thinking that everything is a nightmare. The next day, she gets rid of each and every piece of memory of her and the yukkuris. That's when she finds the card.
Apparently she had a guy, but the guy had another woman, and didn't want the child she was having. And she couldn't say a thing about it to anyone.
yukiyuzen said: anko#### tag might be wrong. It looks like a 1578 to me, but it could be 1378.
It is anko 1378, "Cute Child". It's a short ficlet/vignette where anon, for shits and giggles, stuck koyukkuri on the inner rim of the car. According to anon, the sight of miserable yukkuri, and their squeals of anguish as he drove off, is cute.
dexter said: I don't think this fits the bill of a happy end.
A seemingly nice, non shitheaded yukkuri loses a loving parent, is all that I see from these illustrations, though I'd have to read an anko summary to be sure it's just a sad end.