アルタードピンク～特務戦隊デュエルレンジャー～

There are monsters who suddenly appear in the city and destroys everything. To deal with it, a special soldier group is formed and they work hard every day. One day, a monster comes to the city and the soldiers fight against it. However, while a battle is taken place, the Pink Ranger, Hikaru, goes missing.... They need a replacement and Kurumi, the Yellow Ranger's younger sister, is picked up as the Pink Ranger. Several days later, a monster appears again and the Yellow and Pink Rangers are held hostages.... When Kayoko, the boss of the group, doesn't know what to do, Shiori, her daughter, volunteers as the Pink Ranger. However, she is also held hostage during the next battle....

[From ErogeShop]