After my father remarried, I ended up living with his new wife's daughter. One day, we two peeked at our parents having sex in the bath and got excited. Seeing his erect dick, I grabbed it and said, 'We're siblings, so you shouldn't get hard,' while looking at him with eyes glistening with excitement. Then, I made her insert a vibrator fixed in her panties and forced her to perform fellatio. She seemed really excited; is she a tsundere masochist? Well, since it's come to this, there's no choice but to commit incest. Since we're not blood-related, it should be fine, right? I'll just ejaculate in her mouth for now.
