Need help, how to play Lv1.Yushaga.Megami (Lv1勇者が女神・邪神と♀モンスター繁殖計画始めました！)

I downloaded this game because I like to play any RPG game, but this game I have no idea how to play this game.
Is there any ENG translation, how to play, guide or walkthrough?
Or anybody would kindly please explain how to play it? Thank you.