File:Flag of the Japanese Crown Prince.svg - Wikimedia Commons

File:Flag of Eswatini.svg - Simple English Wikipedia, the free encyclopedia

File:Flag of the Japanese Emperor.svg - Wikimedia Commons

File:Imperial Seal of Japan.svg - Wikimedia Commons

Royal Sneaker Prince, Royal Sneaker Prince SVG, Royal Sneaker Prince Clipart Royal Sneaker Prince Cut File, Royal Sneaker Prince Birthday - Hong Kong

Royal Standard of the King of Cambodia Logo free vector

File:Flag of Aichi Prefecture.svg - Wikimedia Commons

Crown prince of japan hi-res stock photography and images - Alamy

Communist Japan

Heart Queen Crown SVG, Queen of Hearts, Vector Cut File and PNG Transparent Background, Clip Art, Pink, Yellow, Instant Digital Download - New Zealand

Flags from European countries' subservient pasts (x-post from /r/vexillology) : r/europe