Gamrip visual novels KangokuAcademia from Lilith Studio.

The age of space travel. For many years, mankind has been terraforming lifeless planets. Humanity has mastered and inhabited all the planets of the solar system. The United Federation of humanity was created to maintain peace and harmony in the universe. However, that was not to be, and all hopes for peace were dashed and trampled in the abyss of despair. Formed two warring sides "Spasmodic and Errode" whose ideology radically different from each other. Humanity has entered a new era-an era of chaos. 

In the New Solar military Academy works the main character of hentai. It soon should become one of participants of the great "German battle". Now she is a special academic instructors and helps newly arrived students to get used and join the team. 

All plans are crumbling after the military Academy penetrates the agent under cover of the warring factions. His only goal is revenge...