A three-day event in which she trained her sister who became attached to me on a meat-masturbation toy while traveling with a friend

Karen, her younger sister who is attached to me. At first I even thought it was annoying... My feelings changed since she began to suspect that the guy she was traveling to was a man. My anxiety about her... I was able to dispel my sister... Rather than being cheated on you, I'll cheat on you first... That's how I felt, but... The actions to Karen, who accepts anything, escalated. Cheating, betrayal, and sex alone is no longer enough, blindfolding, handcuffs, training, and more...