Elf Gun no Shimai ~Uruwashiki Kindan no Asobi~

Alberta, a general of the army, is very strict. However, Liese, Alberta's younger sister, has a totally different personality and enjoys dating with a lot of guys. One day, Alberta accidentally sees Liese and Stella, Alberta's junior partner, having sex. Alberta is surprised to see it and masturbates to soothe herself.... It's just a matter of time before Alberta has sex with Stella.... However, Liese knows their relationship and....