Complex sentence: Upon arriving at the specified address looking for a rabbit named Aki, he finds that there is no rabbit, instead he discovers a young man bound, naked, in a closet, apparently working as a sex slave to the man who hired him.
Split into simpler sentences: Upon arriving at the specified address, looking for a rabbit named Aki, he finds that there is no rabbit. Instead he discovers a young man bound, naked, in a closet, apparently working as a sex slave to the man who hired him.