真・恋姫†英雄譚4～乙女艶乱☆三国志演義［呉］～

Sonsaku has finally achieved the ambition of her mother, Sonken.

The three kingdoms of Go, Shoku, and Gi formed a strong alliance, and peace finally came to this turbulent continent.

However, the world of peace seems a little too boring for Sonsaku the Little Conqueror ―――

[Translated from the official website]