I feel this story was very "Japanese". There seems to be some context missing, unless you are aware of Japanese society. Lots of questions, little answers. Kind of reminds me of Yokohama Kaidashi Kikō, in which it causes lots of questions but no answers and the characters continue to move on with their lives, "to move forward". Youko is the type of character who has to move forward, even if little has changed on her situation. Meanwhile the future that Megu comes from seem to be a problematic one. She never tell us all the details, instead Youko pays attention to what Megu says, does or act and extrapolates what the future must be like: not knowing that it gets cold at night (?), she is amazed with hot water, never eaten anpan, never seeing city lights of street lights before, finding excitement with school, etc. (maybe Megu is just a simple person to please, but I suspect there is more to it). I suspect the reason she traveled to the past for her cells, is that the people from the future cannot either procreate or their cells are too damaged and they need new ones (which reminds me of Japan's attempt to deal with their population decline, and the fear that if nothing changes by 2050, they may be done as a Nation).
It was an ok story. I feel the ending was a bit sad.
