https://www.dlsite.com/maniax/work/=/product_id/RJ01124568.html

can someone tell me what the plot is mainly about?

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As for what's going on, given he has sex with the first girl in class and on page 169 there's other people having sex in the background I think this is one of those stories where people are encouraged to have kids no matter what. Like those ones where a guy gets a card he can show off that requires a girl to have sex with him.

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@DXTflame
I put a few of the first images in google translate and apparently the girls need to become pregnant in order to graduate, thats all i know

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@DXTflame
As part of the government's strategy to counteract sub-replacement fertility, practical sex training is a mandatory class for third year students. In order to graduate, female students must become pregnant with their male partner's child. The protagonist is assigned three girls to impregnate.

So basically, there really is no plot.

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