http://www.dlsite.com/maniax/work/=/product_id/RJ132560.html

Hope it will be translated

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I think the story go this way: The girl (almost certainly a foreigner) is in love with the good looking guy and want to have sex with him, he refuses (retarded), probably because he think is too soon in their relationship, they are not official, believes they should be more old before doing that stuff.
He (more retarded) talks of it with his school friend, the guy can't believe of the idiocy of it and comes up with a plan who use the best of their idiocy.
I think he says to the girl the guy she loves wants a girl who already experienced sex/every Japan guy wants a not slut girl, he talks of something like that in class and make sure she over hear them.
Therefore the "training" starts, he make sure to break the girls slowly, drugs the guy and make she think is normal he his sleeping when she is being deflowered.
They do other sexual acts close to him so she continues to believe the NTR guy, he even makes her a public slut in school for furthering her training and destroyng more of her morale (and after that, her ass).
I presume he said for a woman in Japan having a child is a great honor and make her beg for it when is ovulating (and the retarded guy thinks something is strange with the 2, but it keeps busy his single neuron and don't do anything).
In the end the stupid girl tells to the retarded guy what happened when he finally notices she is at her sixth months and she produces a photo of probably a few days before with the fucking on him and probably tells him she is finally the bitch he wanted, the guy shocked to realize how much of a retard he is.

This for me is not a complete NTR, the girl is slut at the core, never saying go or doubting the NTR guy, and the retarded guy is too blind to the facts, probably he accept her or send her away, the other guy takes her and they do a splendid family.

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Moe has now translated this but it's under the members section.

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http://www.dmm.co.jp/dc/doujin/-/detail/=/cid=d_067866/

English - https://e-hentai.org/g/997706/1aa5a61549/

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