My girlfriend's friend's unwittingly perky buttocks drove me crazy... I subjected her to rear-entry humiliation, and then the next two days were the same – a relentless assault on her fleshy buttocks until I was completely satisfied. (Kasumi Riko SSIS-534)

I discovered the ideal buttocks I'd always been chasing. They belonged to my girlfriend's best friend, "Riko." The flesh, the shape, the volume—everything was perfect… As I subconsciously continued to chase after them, my penis became hot and uncontrollable. The texture, the smell, the juices of that buttocks—all of it excited me even more. Lost in my own world, I thrust and violated her buttocks and vagina relentlessly. "It's all because of Riko's ass… I'll violate you tomorrow and the day after!"