Welcome to the dreamy harem school life of impregnating little girls!

You're a homeroom teacher doing one of society's greatest jobs:
education our youth and securing their bright futures, and in effect, the future
of all generations. In this case, though, society needs MORE generations!
The population is in decline, so onegai sensei, do your duty...
splash your seed into the little girls' wombs!

[From DLsite English]