CHRV-128 - Marriage training? I'll teach you myself. I-cup 103cm Miku's practical techniques

My little sister is obsessed with getting married, but she wouldn't last three days in a real marriage with that naive mindset. The world isn't that easy. To keep the spark alive for decades, she needs some real-world experience. So, I've decided to take charge. I'm going to teach her exactly how to please her partner in bed, starting with a very intense private lesson tonight.