I would like to make a request here to Paradox about the Nipponese flag in Victoria:
In Europa Universalis II, the hinomaru flag is used for the shield. However, this flag was not made the national flag of Nippon until the Meiji Restoration.
( Europa Universalis II Nippon Shield:
)
So, it would be erroneous to use the hinomaru flag for Nippon prior to the Meiji Restoration. Perhaps the Tokugawa Family Mon could be used for Nippon while the Bakufu is still in power, to represent the Tokugawa Shouguns. Or also perhaps the Emperor's Flag could be used for Nippon's flag until Meiji Restoration (The Emperor had no power, but the Shouguns were theoriotically carrying out the will of the Emperor, so using the Emperor's flag could be fine as well).
I hope that this can be helpful to the developers.
Meiji-Tenno
In Europa Universalis II, the hinomaru flag is used for the shield. However, this flag was not made the national flag of Nippon until the Meiji Restoration.
( Europa Universalis II Nippon Shield:
So, it would be erroneous to use the hinomaru flag for Nippon prior to the Meiji Restoration. Perhaps the Tokugawa Family Mon could be used for Nippon while the Bakufu is still in power, to represent the Tokugawa Shouguns. Or also perhaps the Emperor's Flag could be used for Nippon's flag until Meiji Restoration (The Emperor had no power, but the Shouguns were theoriotically carrying out the will of the Emperor, so using the Emperor's flag could be fine as well).
I hope that this can be helpful to the developers.
Meiji-Tenno