Haruna, with her innocent smile and straightforward Hitomi, is my girlfriend's older sister! My feelings are completely drawn to Haruna, and this dangerous and forbidden relationship has begun! I know that this twisted relationship won't last forever, but I can't lie to myself anymore! What will become of this forbidden relationship between me and my girlfriend's older sister...?! The girlfriend is played by popular actress Riku Minato! Of course, I have sex with her too!