My older sister noticed my nipples were very sensitive and teased me while playing with them. 2. Miu Arioka, Akina Ito DRPT-098

The older sister, always teased about her breasts by her younger sister, is waiting for her chance to retaliate! One night, she discovers her older sister sleeping in the entryway! She secretly touches her nipples and finds them sensitive! The next day, she faces her older sister from behind while she's on the phone with her boyfriend… and is teased, licked, and kissed, instantly reaching orgasm from her sister's tongue skills, becoming a nipple-deprived older sister! While the older sister is discovered doing nipple manipulation in the bathroom, the younger sister suddenly barges in! She laughs and plays with her older sister's nipples, continuing her nipple development for several days! Although the younger sister tortures the overly sensitive older sister with various playful methods like backrest pressure and ice torture, in the end, it's the older sister who plays with the younger sister's nipples…