URKK-014 - My GF and her sister

My girlfriend Suzuka is innocent and loyal, but her older sister Honoka is a different story. Honoka is a seductive beauty who loves men and can't resist a good time. I've been hiding my relationship with Suzuka from her, but when I unexpectedly show up at their place, I'm left alone with the predatory older sister. The tension is rising, and things are about to get complicated.