Montgomery gland: It is a small protrusion near the nipple. It is a sebaceous gland that secretes sexual pheromones, dotted on the areola. Each one is small, but by stimulating the protrusions, the sensitivity gathers as if swirling from the entire areola, leading to a full erection of the nipple. It feels better than continuing to stimulate the nipples directly, and the bumps of Washio Mei's chikubi reach the highest point ever! Please take a look at the appearance of the S1 actress who shakes her big and scorches herself with a new pleasure.