Japanese Straits – Vanilla Edition
The three straits added are:
Tsushima – Korea
Hokkaido – Sakhalin
Kuril Islands – Kamchatka
These straits allow for Japan to maintain contiguous land borders while preserving the geography of Asia.
This is by no means balanced, and will likely make it much easier for a Japan player or AI, as all trade from Afro-Eurasia will likely go via land routes and cannot be intercepted by convoy raiders.
Because of these straits, Japan will need to defend their northern territories against Russian incursions, as they can now spiral into full scale invasions of the Japanese mainland.
Tsushima will also require defense, as the Chinese can march into the Home Islands through the strait.
These straits will allow Japan to achieve their own "Mare Nostrum" through the annexation of Russian far-eastern territories, solidifying Japan’s solitary ownership of the Sea of Japan.
The screenshots were taken while using the Kaiserreich Graphical Overhaul, a mod I highly recommend.
https://steamcommunity.com/sharedfiles/filedetails/?id=1929332879
Kaiserreich Edition:
https://steamcommunity.com/sharedfiles/filedetails/?id=2580494171
Kaiserredux Edition:
https://steamcommunity.com/sharedfiles/filedetails/?id=2583153987