There were no secrets in civil aviation information, let alone private airplane routes. All this information was accessible by the airport staff and detectable by the flight schedule system. As such, Isaac could provide his findings to Charlie without any complications.

In his reply to Charlie’s message, there were a total of four private airplanes departing from Osaka to Raventon.

Among these four, there were two airplanes with very few passengers - about ten people in total. Since the Schulz family had sent plenty of assassins to Japan, it would be unlikely for them to travel back to their home country in these two airplanes. As such, Charlie excluded the two planes.

Meanwhile, the remaining two private airplanes were modified from the Airbus A320. After the modification, the two airplanes would be able to accommodate about forty to fifty passengers. Therefore, Charlie had speculated that the Schulz family's assassins would take one of these two A320s to leave Japan.

He then request