Japanese Yamato Empire Chronicles - TS girl, use post WWI nation from the game making to conquer the fantasy

Name: Yamato Empire Chronicles - TS girl, with the strongest recent nation from the game making
to conquer the fantasy world
(大和帝国記　～ＴＳ娘、ゲームで作った最強近代国家でファンタジー世界を制す～)
Raw Link: https://ncode.syosetu.com/n1415hj/
NU Link: No Link
Why It Should Get Picked Up: Another novel that looks like a summoning Japan, but this is a custom empire from a game where the level of national technology is post WWI.
364,101 japanese words
Description:
In a certain war game, the protagonist fights his last naval battle as President of the Yamato Empire before the game shuts down, after which the protagonist is summoned to a supposedly isekai.
And, not only that. The Yamato Empire, which was supposed to be game data, materialised as a real country