A fully clothed female SOD employee reports on a naked man with a shy attitude. A serious nipple-encircling experiment. SOD Sex Science Lab Report 18. 19 women who are confused by their sensitive reactions but can't take their eyes off the swelling nipples and throbbing penises. Iida Yui, Matsutani Akiko, Maeda Kotone, Gunji Honoka, Ohashi Hona