Suika wa Shoushika Tantou

In the year 20XX, Japan was in decline because of falling birth rates. To prevent Japan from dying out, it was decided that girls who reached a determined age would be allocated to single men. "Please make a baby with me..." says Suika, a girl who is shy but has a strong sense of responsibility, to Hedeki, a disappointing recluse who aspired to be a novelist. Under this unprecedented national policy, the two begin their stimulating life together!

(Source: Square-Enix, translated)