"There's definitely an erotic aspect to the game and that I won't deny, but when you mix sex together with an outstanding story that delves as deep into philosophy and existence as any truly noteworthy RPG, then you've got a recipe for greatness."

"Meh. 10/10. Would play again."

"The first thing I will say is that your mileage WILL vary. Chances are, if you're a guy and already play eroge, you'll find that this game is some awesome shit. If not...well, there's always a first time."

In a world where monsters take the forms of women who lust after a substance only men can give them, one boy is fated to change everything forever. And to continuously get raped doing so.

The plot starts when Luka, hero of this story, has a dream of the goddess Ilias who commands him to take up arms, become a hero worthy of her and slay the Monster Lord whose legions of monster girls attack humans everywhere.

(From VNDB)