[SONE-925] I'm going to play SM with a serious childhood friend... Awakening to a serious de M propensity and becoming a sensitive masochist pet - Masuzu Mita

My childhood friend and one year older than me, Masuzu's older sister, had excellent grades and often went home to teach her studies. When I talked to him about his recent interest in SM play, he asked me to give it a try...? What. Yay! First, play bondage with cotton rope. If you fix it in an embarrassing outfit, your pants will already have stains... A naughty liquid that overflows more and more when I blame it. I was getting excited too, so I couldn't help but stick in my mouth! Is this a deep throat? It looks very painful! I can't stand it~! Somehow my sister doesn't seem to be a big deal. Is this a masochist awakening? I might be talented.
…… I decided to train her as a masochist pet.