Sumire and Mai were shy and didn't stand out in class, but when it was discovered that they had sensitive nipples, they were made fun of by bullies. When I took the plunge and consulted my homeroom teacher, I unexpectedly developed double nipples for the reason of ! ! Although they look plain, their nipples are erect and flashy... I have to get them used to all kinds of stimulation... (lol) If they're best friends, they should lick each other's nipples...