Main character is a guy dressing like a girl(no futa no female:crossdressing). Title means "Always! Crossdress in womens clothes and impregnate" The story says he has been cursed to turn into a women unless he takes a wife(page 10 he outright says im a guy). Crossdressing and going to an all girls school apparently helps to slow down the transformation. P56-58 Visually you see him in the bath with no tits and doesnt show vag.
@dragonknight745 In the ADV game this is based on there is multiple endings and one is where he turns into a futa (and gets pregnant himself) but its not shown in this adaptation
I'm pretty sure the cursed is stop if he gets a girl pregnant. Thou his mother is actually his father who got stuck midway and is now a futanari.so if he fails, he becomes a women.
Oh, this is the prequel to the main series. This is the fathers story where he canonically becomes a futa.