Otaku's Fantasy 2

one day, a portal opened for appearantly no reason, evils poured in - the devil who wants to rule the world, slime princess that's acutally kinda cute, blood-thirsting succubus, fox of mystery and sexy mermaids. I was enslaved by those beautiful monstresses and drilled day by day. But everytime I died I got stronger, and one day, I gotta conquer them all!