Gada Musume Quest / 犯されRPG ガダ娘クエスト 僕はセックスゴッドの潮太郎だぁ!

The world of Meiria was populated by
The goddess Alice who created humans and
The demoness of Gadalf who created monsters.
.. but you can disregard the history of things. Lol
Essentially, to rid the world of the monsters,
A boy from the world of Earth is to Meiria!
His name is Shiotaro. Gifted with the power of a sex god,
His charge is to wield that power on the monsters.
The one who summons him teaches him how to screw,
And how to battle monsters with his sexual talents.
Shiotaro's orgasms are gush on gush
As the so-called sex god is drawn into "war".