Gunjin Shoujo no Kozukuri Ninmu ~Harenchi na! ...U, Joukan Meirei nara... Anata no Seishi de Shikyuu o Uchinuite Kudasai!~

One day while you return from school, horny as usual, a suspicious black-clad figure attacks you. At the same time a beautiful skilled soldier girl comes to your rescue. But then you are kidnapped by her!

[From English DLSite]