Henry and Edward are also the first names of Dr. Jekyll and Mr. Hyde, respectively.
Janus was the Roman god of gates, doors, doorways, beginnings and endings. He is usually depicted as having two faces or heads, facing in opposite directions. One face could see the past, the other the future.
The name of the company that Edward works for, Janus, comes from the name of the Roman god, the two-faced keeper of gateways, beginnings or endings. When you re-arrange the letters of Janus to get A.J. Sun, the company that Henry works for.