He has always had the hots for his big sister.. but unfortunately for him, she only has eyes for HIS big brother.

"I'm sure Rio will respond to my feelings... It will take time, but I believe so..."

Reality check kid, she's already long gone...

"I don't know what Rio wants..."

It's the first Christmas since we started dating...

What she really wants isn't a Christmas present from them, but their...

"My words...couldn't reach her..."

With their new life, separated by distance, he starts having worries that there might be more going on...

"Wait... what is this video..?"

Momota, a college student, is obsessed with her former classmate, Kaito. She watches rape videos involving Kaito and Rio to masturbates. One day, Kaito invites Momota to a photo shoot and seduces her to take her to a love hotel. Despite her initial resistance, Momota gives in and surrenders to pleasure with Kaito.

After that day, Momota continues to engage in sexual activity with Kaito. One night, she goes to Kaito’s house but is greeted by Rio being fucked and reaching orgasm. Despite feeling shame at first, Momota joins them until pleasure makes them lose their reason.