So, i noticed that Simvation lacks in Japanese liveries and since i can't repaint aircraft i thought i might consult this forum.
Project Airbus A320-200 Requests - Star Flyer, All Nippon Airlines, and Jet Star Japan
Project Opensky B737 Requests - Japan Airlines, All Nippon Airlines, Japan Airlines Express, Skymark, Solaseed Airlines, and of course. All of their retro/old liveries.
SkySpirit Native B767 Requests - Japan Airlines, All Nippon Airlines, and Skymark Airlines.
b747-400D if Available Japan Airlines and All Nippon Airlines.