My girlfriend's younger sister, Miyu, apparently ran away from home and came to stay with her girlfriend. When I met Miyu after a bath, she revealed her sensitive nipples and said, "Big bro, your nipples are sensitive, aren't they?" From then on, Miyu began whispering and teasing my nipples whenever and wherever she wanted to seduce me...! While we were eating, bathing, working remotely, and even at work...! When she wasn't home, she started teasing my nipples thoroughly! Just when I thought she was gently rubbing them, she started pinching them, constantly teasing my nipples! "I'll give you all the nipple teasing that you can't do with your big sister." I couldn't help it... Miyu's nipple teasing felt so good that I thought I couldn't... 10 situations for thorough nipple development, using foam, lotion, and toys. Miyu's intimate dirty talk made me lose my mind and I couldn't resist the pleasure of being seduced...