This OVA is a clearly metaphorical sequence, in which love is portrayed in a way that goes beyond the corporal and physical.
Let's start with the story of the boy (whose name throughout the story we do not know) falls in love with an ethereal girl that gives him a feather as a symbol of that love and that despite many years passing, that love does not wither. The boy keeps the feather in the hope of finding that girl again one day. The dreams described the realities that each one of them experienced in their worlds. The boy was always trying to find that girl and on the other hand, she was waiting for him in eternal solitude. In the end, in a very metaphorical way, an elderly man reunites with the girl and gives her back the feather, I think it is an excellent representation of what death is, for me it was very beautiful.
I want to highlight the art of this work, despite the fact that it is a sequence of images and not an animation, each image is pure art, handmade and with very small details that feed into the story, it was what I liked most of all.