Tsubomi (Anthology) - Vol. 17 Ch. 1 - To Do What I Can For Tomorrow’s You – A Girl From The Future

[MangaDex]

 

[AsuraRaza]

This story could do with a sequel.
And it would have been nice to learn more about why Youko had been selected by that girl. But maybe it was all just in her head? There's no need to have sex to harvest eggs, after all.