How I Became the God of the World in Another Realm with a Whip

How could an adult store possibly get robbed? Honestly, the owner had it pretty rough. The robbers thought he was too poor, so one of them pulled out a grenade and yanked the pin? The adult store exploded, and he transmigrated to another world! It was a place where vicious beasts ran rampant, and humans could become their prey at any moment. To survive in this world, he had to be strong enough! But from the start, all he had was a little whip...?