Harem of Monster Girls in Another World

As a fan of simulation games, I heard a call in my sleep one day and woke up to find my familiar room transformed into a spacious marble temple, - with a silver-haired girl looking at me with contempt. - "I am the goddess of this world, 'Sophilia,' and I have summoned a Brave to save it." - Although she called herself a goddess, she didn't look very clever. - I was given the most powerful "God's Power" by mistake, and an idea of mischief was born in my mind--