the three days that she taught her sister to Onaho when she was on a trip with her friends, tsukuda karen.

I don't like her sister Karen. At first, I even thought it was glamorous. My feelings changed after she suspected that the man was her travel partner. i'm worried about her. i was confused with your sister... i'll have an affair before you get cheated... that's how i felt... The act on Karen, who accepts everything, escalated. Flirtation, betrayal, and sex alone are no longer enough, blindfolding, handcuffs, etiquette, etc.