Why is there no triple-A video game taking place in Japan during the Northern and Southern Courts period of feudal Japan ?

There are triple-A video games taking place in feudal Japan during the following periods :

1) The Jishō–Juei War such as :

- Genji: Dawn of the Samurai and Genji: Days of the Blade

- Nioh 2: The Tengu's Disciple

- Total War: Shogun 2: Rise of the Samurai

2) The Mongol invasions of Japan such as :

- Ghost of Tsushima

- Shogun: Total War: The Mongol Invasion

3) The Warring States period of Japan such as :

- Samurai Warriors

- Sengoku Basara

- Onimusha

- Nioh

- Sekiro: Shadows Die Twice

- Shogun: Total War and Total War: Shogun 2

4) The Meiji Restoration such as :

- Rise of the Ronin

- Total War: Shogun 2: Fall of the Samurai

But why is there no triple-A video game taking place in Japan during the Northern and Southern Courts period of feudal Japan ?